DIFF Subgroup
F02K 9/56 Control
Introduced: January 1980
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 > Feeding propellants > Control
CPC:
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > using liquid or gaseous propellants (F02K9/72 takes precedence) > Feeding propellants > Control
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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