DIFF Main Group
F04C 9/00 Oscillating-piston machines or pumps (such pumps specially adapted for elastic fluids F04C21/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Oscillating-piston machines or pumps
CPC: Oscillating-piston machines or pumps (such pumps specially adapted for elastic fluids F04C21/00)
Full Title
Full titles differ between systems:
IPC:
Oscillating-piston machines or pumps
CPC:
Oscillating-piston machines or pumps (such pumps specially adapted for elastic fluids F04C21/00)
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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