DIFF Subgroup
F02K 9/425 Full Title
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > using liquid or gaseous propellants (F02K9/72 takes precedence)
F02K 9/425 Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > using liquid or gaseous propellants (F02K9/72 takes precedence)