DIFF Subgroup
F16K 15/14 with flexible valve members
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Check valves > with flexible valve members
CPC:
Check valves (valves specially adapted for inflatable balls A63B41/00) > with flexible valve members
CPC subdivides this area 6x more granularly than IPC with 5 additional codes.
5 codes are CPC-only extensions.
Child Classifications
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