DIFF Subgroup
F16K 15/16 with tongue-shaped laminae
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Check valves > with flexible valve members > with tongue-shaped laminae
CPC:
Check valves (valves specially adapted for inflatable balls A63B41/00) > with flexible valve members > with tongue-shaped laminae
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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