DIFF Subgroup
F16K 17/16 with fracturing diaphragm
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Safety valves; Equalising valves > opening on surplus pressure on one side; closing on insufficient pressure on one side > with fracturing member > with fracturing diaphragm
CPC:
Safety valves; Equalising valves, > opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00) > with fracturing member > with fracturing diaphragm
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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