DIFF Subgroup
F02K 9/42 using liquid or gaseous propellants (F02K9/72 takes precedence)
Introduced: January 1980
Title
Titles differ between systems:
IPC: using liquid or gaseous propellants
CPC: using liquid or gaseous propellants (F02K9/72 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > using liquid or gaseous propellants
CPC:
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > using liquid or gaseous propellants (F02K9/72 takes precedence)
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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- F02K 9/60 Constructional parts; Details not otherwise provided for since 1980 +1 CPC IPC+CPC Available in IPC and CPC