DIFF Subgroup
F16K 17/40 with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint (valves opening on surplus pressure F16K17/14)
Introduced: September 1968
Title
Titles differ between systems:
IPC: with fracturing member, e.g. fracturing diaphragm, fusible joint
CPC: with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint (valves opening on surplus pressure F16K17/14)
Full Title
Full titles differ between systems:
IPC:
Safety valves; Equalising valves > with fracturing member, e.g. fracturing diaphragm, fusible joint
CPC:
Safety valves; Equalising valves, > with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint (valves opening on surplus pressure F16K17/14)
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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