E02B1/00	7	Equipment or apparatus for, or methods of, general hydraulic engineering {, e.g. protection of constructions against ice-strains (protection of offshore constructions against ice-loads E02B17/0021; ice-structures as artificial islands E02B17/028)}	E02B1/00	E02B1/00		2128
E02B1/003	8	{Mechanically induced gas or liquid streams in seas, lakes or water-courses for forming weirs or breakwaters; making or keeping water surfaces free from ice, aerating or circulating water, e.g. screens of air-bubbles against sludge formation or salt water entry, pump-assisted water circulation (moving sediments E02B3/023; for ice breakers B63B35/08; aerating or circulating water in fish-tanks A01K63/042; purification of waste water with addition of air C02F; distributing gases in liquids in general B01F23/20)}	E02B1/00	E02B1/00		664
E02B1/006	8	{Arresting, diverting or chasing away fish in water-courses or water intake ducts, seas or lakes, e.g. fish barrages, deterrent devices (E02B8/085 takes precedence); Devices for cleaning fish barriers}	E02B1/00	E02B1/00		539
E02B1/02	8	Hydraulic models {(towing tanks or basins for model vessels B63B71/20)}	E02B1/02	E02B1/02		929
E02B3/00	7	Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites (barrages or weirs E02B7/00); Sealings or joints for engineering works in general	E02B3/00	E02B3/00		1112
E02B3/02	8	Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow ({harvesting water plants A01D44/00; underwater loosening of soil or rocks for foundation construction E02D17/16}; dredging or scraping devices E02F5/28)	E02B3/02	E02B3/02		1596
E02B3/023	9	{Removing sediments (in barrages or reservoirs E02B8/02)}	E02B3/02	E02B3/02		955
E02B3/026	9	{Removing solid rocks}	E02B3/02	E02B3/02		77
E02B3/04	8	Structures or apparatus for, or methods of, protecting banks, coasts, or harbours ({E02B1/003 takes precedence;} sealing or joints E02B3/16)	E02B3/04	E02B3/04		1610
E02B3/041	9	{using active mechanical means, e.g. fluidizing or pumping}	E02B3/04	E02B3/04		273
E02B3/043	9	{Artificial seaweed}	E02B3/04	E02B3/04		668
E02B3/046	9	{Artificial reefs}	E02B3/04	E02B3/04		1738
E02B3/06	9	Moles; Piers; Quays; Quay walls; Groynes; Breakwaters {; Wave dissipating walls; Quay equipment}	E02B3/06	E02B3/06		3922
E02B3/062	10	{Constructions floating in operational condition, e.g. breakwaters or wave dissipating walls (floating oil barriers E02B15/08; floating stream regulating devices E02B3/02)}	E02B3/06	E02B3/06		1221
E02B3/064	11	{Floating landing-stages (construction of pontoons B63B35/34; landing bridges E01D15/14)}	E02B3/06	E02B3/06		804
E02B3/066	10	{Quays (bulkheads E02D5/00; caissons E02D23/00; retaining walls E02D29/00)}	E02B3/06	E02B3/06		974
E02B3/068	10	{Landing stages for vessels (floating landing-stages E02B3/064; landing bridges E01D15/14)}	E02B3/06	E02B3/06		970
E02B3/08	10	Structures of loose stones with or without piles (piles E02D5/00)	E02B3/08	E02B3/08		341
E02B3/10	9	Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like (making embankments or dams in general E02D17/18)	E02B3/10	E02B3/10		2315
E02B3/102	10	{Permanently installed raisable dykes}	E02B3/10	E02B3/10		585
E02B3/104	11	{with self-activating means}	E02B3/10	E02B3/10		465
E02B3/106	10	{Temporary dykes}	E02B3/10	E02B3/10		886
E02B3/108	11	{with a filling, e.g. filled by water or sand}	E02B3/10	E02B3/10		1005
E02B3/12	9	Revetment of banks, dams, watercourses, or the like, {e.g. the sea-floor}(of slopes in general E02D17/20)	E02B3/12	E02B3/12		4504
E02B3/121	10	{Devices for applying linings on banks or the water bottom (for lining canals E02B5/02)}	E02B3/12	E02B3/12		1086
E02B3/122	10	{Flexible prefabricated covering elements, e.g. mats, strips}	E02B3/12	E02B3/12		1156
E02B3/123	11	{mainly consisting of stone, concrete or similar stony material}	E02B3/12	E02B3/12		624
E02B3/124	11	{mainly consisting of metal}	E02B3/12	E02B3/12		208
E02B3/125	11	{mainly consisting of vegetable material, e.g. wood, reeds}	E02B3/12	E02B3/12		454
E02B3/126	11	{mainly consisting of bituminous material or synthetic resins}	E02B3/12	E02B3/12		440
E02B3/127	11	{bags filled at the side}	E02B3/12	E02B3/12		741
E02B3/128	10	{Coherent linings made on the spot, e.g. cast in situ, extruded on the spot (for canal linings E02B5/02)}	E02B3/12	E02B3/12		535
E02B3/129	10	{Polyhedrons, tetrapods or similar bodies, whether or not threaded on strings}	E02B3/12	E02B3/12		1535
E02B3/14	10	Preformed blocks {or slabs for forming essentially continuous surfaces}; Arrangements thereof {(preassembled to constitute flexible mats E02B3/122; pavements E01C5/00)}	E02B3/14	E02B3/14		4951
E02B3/16	8	Sealings or joints ({E02B3/12 takes precedence; sealings for specific structural foundation elements, see the relevant groups for those elements; sealings for barrage or lock gates E02B7/54}; joints for foundation structures E02D29/16; sealing joints not restricted to hydraulic engineering work E04B1/68)	E02B3/16	E02B3/16		3665
E02B3/18	8	Reclamation of land from water {or marshes}(drainage of soil E02B11/00)	E02B3/18	E02B3/18		463
E02B3/20	8	Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards (tying-up, anchoring B63B21/00, e.g. bollards for shipping B63B21/06; buoys B63B22/00{; equipment specially adapted for use in locks or dry docks E02C1/10})	E02B3/20	E02B3/20		698
E02B3/24	9	Mooring posts	E02B3/24	E02B3/24		694
E02B3/26	9	Fenders ({fenders for protecting offshore constructions E02B17/003}; fenders integral with waterborne vessels or specially adapted therefor B63B59/02)	E02B3/26	E02B3/26		2482
E02B3/28	9	Fender piles	E02B3/28	E02B3/28		215
E02B5/00	7	Artificial water canals, {e.g. irrigation canals}(for water-power plants E02B9/02; irrigation of soil E02B13/00)	E02B5/00	E02B5/00		826
E02B5/005	8	{Canals entirely situated above ground level, e.g. on piers (canal bridges E01D18/00)}	E02B5/00	E02B5/00		73
E02B5/02	8	Making or lining canals {(linings in general E02B13/02; digging canals E02F)}	E02B5/02	E02B5/02		1915
E02B5/04	8	Navigable canals	E02B5/04	E02B5/04		78
E02B5/06	9	Operating equipment in connection with canals (ship-lifting devices E02C)	E02B5/06	E02B5/06		63
E02B5/08	8	Details, e.g. gates, screens<br><br><u>NOTE</u><br><br>This subdivision is limited to closures, devices for arresting waterborne materials and divisors	E02B5/08	E02B5/08		1519
E02B5/082	9	{Closures (for irrigation conduits E02B13/02)}	E02B5/08	E02B5/08		538
E02B5/085	9	{Arresting devices for waterborne materials, e.g. gratings (fish barrages E02B1/006; removing sediments E02B3/023; arresting oil or similar polluants E02B15/08; for waste water purification E02F; in sewers E03F5/14)}	E02B5/08	E02B5/08		1571
E02B5/087	9	{Divisors}	E02B5/08	E02B5/08		88
E02B7/00	7	Barrages or weirs; Layout, construction, methods of, or devices for, making same (for protecting banks, coasts, or harbours E02B3/04; sealings or joints E02B3/16; handling building or like materials for hydraulic engineering E02D15/00; foundations in general E02D27/00)	E02B7/00	E02B7/00		698
E02B7/005	8	{Deformable barrages or barrages consisting of permanently deformable elements, e.g. inflatable, with flexible walls (closures E02B7/54; floating oil barrages E02B15/08)}	E02B7/00	E02B7/00		665
E02B7/02	8	Fixed barrages	E02B7/02	E02B7/02		714
E02B7/04	9	Dams across valleys	E02B7/04	E02B7/04		182
E02B7/06	10	Earth-fill dams; Rock-fill dams	E02B7/06	E02B7/06		1055
E02B7/08	10	Wall dams	E02B7/08	E02B7/08		254
E02B7/10	11	Gravity dams, i.e. those in which the weight of the structure prevents overturning	E02B7/10	E02B7/10		226
E02B7/12	11	Arch dams	E02B7/12	E02B7/12		175
E02B7/14	11	Buttress dams	E02B7/14	E02B7/14		180
E02B7/16	8	Fixed weirs; Superstructures or flash-boards therefor	E02B7/16	E02B7/16		298
E02B7/18	9	Siphon weirs {(syphons in hydraulic engineering in general E02D29/08)}	E02B7/18	E02B7/18		203
E02B7/20	8	Movable barrages; Lock {or dry-dock} gates	E02B7/20	E02B7/20		2173
E02B7/205	9	{Barrages controlled by the variations of the water level; automatically functioning barrages (level regulators G05D9/00; the documents are filed in this subdivision and the relevant subdivision E02B7/26&#160;-&#160;E02B7/50)}	E02B7/20	E02B7/20		1425
E02B7/22	9	Stop log dams; Emergency gates	E02B7/22	E02B7/22		205
E02B7/24	9	Needle weirs	E02B7/24	E02B7/24		9
E02B7/26	9	Vertical-lift gates	E02B7/26	E02B7/26		1550
E02B7/28	10	with sliding gates	E02B7/28	E02B7/28		660
E02B7/30	10	with guide wheels or rollers for the gates	E02B7/30	E02B7/30		215
E02B7/32	10	Cylindrical or tubular gates	E02B7/32	E02B7/32		81
E02B7/34	10	Flash- boards for vertical-lift gates	E02B7/34	E02B7/34		323
E02B7/36	10	Elevating mechanisms for vertical-lift gates	E02B7/36	E02B7/36		2268
E02B7/38	9	Rolling gates {or gates moving horizontally in their own plane, e.g. by sliding}	E02B7/38	E02B7/38		141
E02B7/40	9	Swinging or turning gates	E02B7/40	E02B7/40		983
E02B7/42	10	Gates of segmental or sector-like shape with horizontal axis	E02B7/42	E02B7/42		580
E02B7/44	10	Hinged-leaf gates	E02B7/44	E02B7/44		1358
E02B7/46	10	Gates turning round a horizontal axis arranged midway of the flap	E02B7/46	E02B7/46		133
E02B7/48	10	Roof or double shutter gates	E02B7/48	E02B7/48		82
E02B7/50	9	Floating gates	E02B7/50	E02B7/50		360
E02B7/52	9	Equipment preventing vibration of gates	E02B7/52	E02B7/52		200
E02B7/54	9	Sealings for gates	E02B7/54	E02B7/54		1615
E02B8/00	7	Details of barrages or weirs (cleaning or keeping clear the surface of open water E02B15/00){; Energy dissipating devices carried by lock or dry-dock gates}	E02B8/00	E02B8/00		1098
E02B8/02	8	Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material	E02B8/02	E02B8/02		716
E02B8/023	9	{Arresting devices for waterborne materials (E02B1/003 takes precedence; in artificial watercourses E02B5/085; arresting oil or the like E02B15/08; sieving devices for waste water purification C02F; in sewers E03F5/14)}	E02B8/02	E02B8/02		1055
E02B8/026	10	{Cleaning devices (for fish barrages E02B1/006)}	E02B8/02	E02B8/02		1514
E02B8/04	8	Valves, slides, or the like; {Arrangements therefor;} Submerged sluice gates	E02B8/04	E02B8/04		724
E02B8/045	9	{automatically movable}	E02B8/04	E02B8/04		274
E02B8/06	8	Spillways; Devices for dissipation of energy, e.g. for reducing eddies {also for lock or dry-dock gates}	E02B8/06	E02B8/06		2226
E02B8/08	8	Fish passes {or other means providing for migration of fish}; Passages for rafts or boats	E02B8/08	E02B8/08		854
E02B8/085	9	{Devices allowing fish migration, e.g. fish traps (arresting or diverting fish exclusively E02B1/006)}	E02B8/08	E02B8/08		1070
E02B9/00	7	Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same	E02B9/00	E02B9/00		1739
E02B9/02	8	Water-ways	E02B9/02	E02B9/02		611
E02B9/022	9	{Closures}	E02B9/02	E02B9/02		162
E02B9/025	10	{automatically movable}	E02B9/02	E02B9/02		75
E02B9/027	10	{Sliding closures (E02B9/025 takes precedence)}	E02B9/02	E02B9/02		25
E02B9/04	9	Free-flow canals or flumes; Intakes (gratings or screens therefor E02B5/08)	E02B9/04	E02B9/04		553
E02B9/06	9	Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates (driving inclined galleries E21D9/02; valves in general F16K; conduits in general F16L)	E02B9/06	E02B9/06		821
E02B9/08	8	Tide or wave power plants (water-pressure machines, tide or wave motors F03B)	E02B9/08	E02B9/08		940
E02B11/00	7	Drainage of soil, e.g. for agricultural purposes {(draining sports grounds E01C13/083; for consolidating foundation soil, e.g. sand drain piles E02D3/10)}	E02B11/00	E02B11/00		1753
E02B11/005	8	{Drainage conduits}	E02B11/00	E02B11/00		1865
E02B11/02	8	Drainage device- laying apparatus, e.g. drainage ploughs<br><br><u>WARNING</u><br>Group E02B11/02 is incomplete, see also E02F3/00 and E02F5/00, dredgers and soil-shifting machines	E02B11/02	E02B11/02		199
E02B13/00	7	Irrigation ditches, i.e. gravity flow, open channel water distribution systems ({retaining waterborne material in irrigation canals E02B5/085}; other distribution systems for watering or spraying gardens, fields, sports grounds, or the like, A01G25/00; {built-in irrigation means for sports grounds E01C13/083})	E02B13/00	E02B13/00		2236
E02B13/02	8	Closures for irrigation conduits	E02B13/02	E02B13/02		1213
E02B15/00	7	Cleaning or keeping clear the surface of open water; Apparatus therefor (construction of ships or other waterborne vessels B63B, e.g. vessels specially adapted for collecting pollution from open water B63B35/32; in swimming or splash baths or pools E04H4/16)	E02B15/00	E02B15/00		254
E02B2015/005	8	{Tent-like structures for dealing with pollutant emissions below the water surface}	E02B15/00	E02B15/00		108
E02B15/02	8	from ice {otherwise than according to E02B1/003}(construction of ships B63B; {ice-breakers or amphibious vehicles B63B35/08; protecting hydraulic engineering structures against ice-load E02B1/00})	E02B15/02	E02B15/02		399
E02B15/04	8	Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials ({stopping water-borne material in artificial water canals E02B5/085; stopping water-borne material at barrages or weirs E02B8/023}; other treatment of water, waste water or sewage C02F; materials for treating liquid pollutants, e.g. oil, gasoline, fat, C09K3/32{; separation of oil in sewage conduits E03F5/16})	E02B15/04	E02B15/04		714
E02B15/041	9	{Devices for distributing materials, e.g. absorbed or magnetic particles over a surface of open water to remove the oil, with or without means for picking up the treated oil (E02B15/042 takes precedence)}	E02B15/04	E02B15/04		345
E02B15/042	9	{Devices for removing the oil by combustion with or without means for picking up the oil}	E02B15/04	E02B15/04		78
E02B15/043	9	{Devices or methods for removing oil by means of freezing}	E02B15/04	E02B15/04		30
E02B15/045	9	{Separating means for recovering oil floating on a surface of open water (E02B15/048 takes precedence; separation in general B01D)}	E02B15/04	E02B15/04		430
E02B15/046	9	{Collection of oil using vessels, i.e. boats, barges}	E02B15/04	E02B15/04		798
E02B15/047	10	{provided with an oil collecting boom arranged on at least one side of the hull}	E02B15/04	E02B15/04		178
E02B15/048	9	{Oil collectors moved over the water skimming the water surface}	E02B15/04	E02B15/04		414
E02B15/06	9	Barriers therefor (E02B15/08 takes precedence){construed for applying processing agents or for collecting pollutants, e.g. absorbent}	E02B15/06	E02B15/06		1480
E02B15/08	9	Devices for reducing the polluted area {with or} without {additional devices for} removing the material	E02B15/08	E02B15/08		1482
E02B15/0807	10	{with stabilising elements}	E02B15/08	E02B15/08		375
E02B15/0814	10	{with underwater curtains}	E02B15/08	E02B15/08		1158
E02B15/0821	10	{adapted for protection against fire or extreme heat}	E02B15/08	E02B15/08		102
E02B15/0828	10	{fixed to the side of a boat for containing small leaks in the hull}	E02B15/08	E02B15/08		93
E02B15/0835	10	{fixed to permanent structure, e.g. harbour wall or river bank}	E02B15/08	E02B15/08		221
E02B15/0842	10	{adapted to be towed for operation}	E02B15/08	E02B15/08		262
E02B15/085	10	{Details of connectors}	E02B15/08	E02B15/08		500
E02B15/0857	10	{Buoyancy material}	E02B15/08	E02B15/08		398
E02B15/0864	11	{Air (E02B15/0878 takes precedence)}	E02B15/08	E02B15/08		388
E02B15/0871	12	{self-inflating barriers}	E02B15/08	E02B15/08		69
E02B15/0878	11	{Air and water}	E02B15/08	E02B15/08		107
E02B15/0885	11	{Foam}	E02B15/08	E02B15/08		270
E02B15/0892	12	{using expanded polystyrene foam}	E02B15/08	E02B15/08		25
E02B15/10	9	Devices for removing the material from the surface {(E02B15/041, E02B15/042, E02B15/06 take precedence)}	E02B15/10	E02B15/10		5928
E02B15/101	10	{Means floating loosely on the water absorbing the oil (absorbing materials C02F)}	E02B15/10	E02B15/10		458
E02B15/102	10	{Discs}	E02B15/10	E02B15/10		107
E02B15/103	10	{Rotary drums}	E02B15/10	E02B15/10		308
E02B15/104	10	{Conveyors; Paddle wheels; Endless belts (E02B15/101 takes precedence)}	E02B15/10	E02B15/10		2379
E02B15/105	10	{Archimedian screws}	E02B15/10	E02B15/10		84
E02B15/106	10	{Overflow skimmers with suction heads; suction heads}	E02B15/10	E02B15/10		938
E02B15/107	10	{Whirling means forming a vortex in the water; cyclones}	E02B15/10	E02B15/10		253
E02B15/108	10	{Ejection means}	E02B15/10	E02B15/10		178
E02B17/00	7	Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs {or offshore constructions}; Construction methods therefor ({construction methods for floating platforms B63B75/00}; anchoring floating platforms B63B21/00; floating platforms, e.g. anchored, B63B35/44; {underwater reservoirs B65D88/78})	E02B17/00	E02B17/00		2534
E02B17/0004	8	{Nodal points}	E02B17/00	E02B17/00		542
E02B17/0008	8	{Methods for grouting offshore structures; apparatus therefor (cementing boreholes E21B33/13)}	E02B17/00	E02B17/00		250
E02B17/0013	8	{Tube closures for releasable sealing hollow tubes}	E02B17/00	E02B17/00		73
E02B17/0017	8	{Means for protecting offshore constructions}	E02B17/00	E02B17/00		543
E02B17/0021	9	{against ice-loads}	E02B17/00	E02B17/00		352
E02B17/0026	9	{against corrosion}	E02B17/00	E02B17/00		209
E02B17/003	9	{Fenders}	E02B17/00	E02B17/00		309
E02B17/0034	8	{Maintenance, repair or inspection of offshore constructions}	E02B17/00	E02B17/00		463
E02B2017/0039	8	{Methods for placing the offshore structure}	E02B17/00	E02B17/00		1027
E02B2017/0043	9	{Placing the offshore structure on a pre-installed foundation structure}	E02B17/00	E02B17/00		426
E02B2017/0047	9	{using a barge}	E02B17/00	E02B17/00		493
E02B2017/0052	8	{Removal or dismantling of offshore structures from their offshore location}	E02B17/00	E02B17/00		260
E02B2017/0056	8	{Platforms with supporting legs}	E02B17/00	E02B17/00		907
E02B2017/006	9	{with lattice style supporting legs}	E02B17/00	E02B17/00		551
E02B2017/0065	9	{Monopile structures}	E02B17/00	E02B17/00		561
E02B2017/0069	9	{Gravity structures}	E02B17/00	E02B17/00		218
E02B2017/0073	9	{Details of sea bottom engaging footing}	E02B17/00	E02B17/00		274
E02B2017/0078	10	{Suction piles, suction cans}	E02B17/00	E02B17/00		347
E02B2017/0082	10	{Spudcans, skirts or extended feet}	E02B17/00	E02B17/00		517
E02B2017/0086	10	{Large footings connecting several legs or serving as a reservoir for the storage of oil or gas}	E02B17/00	E02B17/00		295
E02B2017/0091	8	{Offshore structures for wind turbines}	E02B17/00	E02B17/00		1295
E02B2017/0095	8	{Connections of subsea risers, piping or wiring with the offshore structure}	E02B17/00	E02B17/00		247
E02B17/02	8	placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto	E02B17/02	E02B17/02		834
E02B17/021	9	{with relative movement between supporting construction and platform}	E02B17/02	E02B17/02		1053
E02B17/022	10	{adapted to travel on the bottom (walking gears moving dredgers forward step-by-step E02F9/04)}	E02B17/02	E02B17/02		69
E02B17/024	10	{shock absorbing means for the supporting construction}	E02B17/02	E02B17/02		135
E02B17/025	9	{Reinforced concrete structures (E02B17/021 takes precedence)}	E02B17/02	E02B17/02		296
E02B17/027	9	{steel structures (E02B17/021 takes precedence)}	E02B17/02	E02B17/02		1089
E02B17/028	9	{Ice-structures}	E02B17/02	E02B17/02		44
E02B17/04	8	Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction (platform lifts in general B66F7/00)	E02B17/04	E02B17/04		245
E02B17/06	9	for immobilising, e.g. using wedges or clamping rings {(as elements of the raising or lowering means E02B17/08)}	E02B17/06	E02B17/06		305
E02B17/08	9	for raising or lowering	E02B17/08	E02B17/08		592
E02B17/0809	10	{the equipment being hydraulically actuated (outriggers for cranes B66C23/80)}	E02B17/08	E02B17/08		310
E02B17/0818	10	{with racks actuated by pinions (lifting jacks B66F3/02&#160;-&#160;B66F3/06)}	E02B17/08	E02B17/08		414
E02B17/0827	10	{with screws and nuts mechanism (climbing jacks with following nut E02B17/0881; lifting jacks B66C3/08)}	E02B17/08	E02B17/08		38
E02B17/0836	10	{with climbing jacks (climbing cranes B66C23/32; hydraulic lifting jacks B66F3/24 and subgroups)}	E02B17/08	E02B17/08		186
E02B17/0845	11	{with inflatable clamping rings}	E02B17/08	E02B17/08		18
E02B17/0854	11	{with clamping wedges, eccentric clamping devices and so on (catch devices for elevators B66B5/20, B66B5/24, B66B5/26)}	E02B17/08	E02B17/08		124
E02B17/0863	11	{with rack and pawl mechanism}	E02B17/08	E02B17/08		62
E02B17/0872	11	{with locking pins engaging holes or cam surfaces}	E02B17/08	E02B17/08		157
E02B17/0881	11	{with following nuts}	E02B17/08	E02B17/08		22
E02B17/089	11	{with subtentation blocks, feet and so on}	E02B17/08	E02B17/08		7
E02B2201/00	7	Devices, constructional details or methods of hydraulic engineering not otherwise provided for	CPCONLY	E02B2201/00		120
E02B2201/02	8	Devices and methods for creating a buffer zone in the water to separate, e.g. salt and sweet water	CPCONLY	E02B2201/02		71
E02B2201/04	8	using old tires for hydraulic engineering	CPCONLY	E02B2201/04		238
E02B2201/50	8	Devices for sequentially discharging constant liquid quantities, e.g. into different irrigation channels	CPCONLY	E02B2201/50		146
