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PCE
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DIFF Subgroup
F01B 25/14

peculiar to particular kinds of machines or engines

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Regulating, controlling or safety means > Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity > peculiar to particular kinds of machines or engines

CPC:

Regulating, controlling or safety means (controlling combustion engines F02D) > Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity > peculiar to particular kinds of machines or engines

No child classifications to compare. This is a leaf node in both IPC and CPC.