using liquid or gaseous propellants (F02K9/72 takes precedence)

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)

Child Classifications

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• F02K 9/425
• F02K 9/44 Feeding propellants
• F02K 9/60 Constructional parts; Details not otherwise provided for