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PCE
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DIFF Subgroup
F01B 29/02

Atmospheric engines, i.e. atmosphere acting against vacuum

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Machines or engines with pertinent characteristics other than those provided for in main groups > Atmospheric engines, i.e. atmosphere acting against vacuum

CPC:

Machines or engines with pertinent characteristics other than those provided for in preceding main groups > Atmospheric engines, i.e. atmosphere acting against vacuum

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