solidified gas being fuel, gases for use as fuel, liquid fuels, solid fuels

Rocket engines not for land vehicles; rocket engines for the propulsion of airborne vehicles; rocket engines for the propulsion of satellites; rocket motor propulsion apparatus being engines for airborne vehicles; rocket motor propulsion apparatus being engines for satellites; rocket engine fuel nozzles; rocket propulsion engines for aircraft; rocket propulsion engines for satellites; rocket engines for the propulsion of aircraft; replacement and structural parts for all of the foregoing