F03H   1/00		ȿưϤ򻺤߽Фˡץ饺ޤѤΡʥץ饺ޤȯΣȣȣ	Use of plasma to produce a reactive propulsive thrust(generating plasma <b>H05H1/00</b>)	2902
F03H   3/00		ȿưϤ򻺤߽ФˡҤѤ	Use of photons to produce a reactive propulsive thrust	95
F03H  99/00		Υ֥饹¾Υ롼פʬवʤΣ	Subject matter not provided for in other groups of this subclass	1122
