Patent Classification Explorer PCE

DIFF Main Group

F16K 39/00

Devices for relieving the pressure on the sealing faces

Introduced: September 1968

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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F16K 39/02 for lift valves +4 CPC IPC+CPC Available in IPC and CPC
F16K 39/04 for sliding valves +1 CPC IPC+CPC Available in IPC and CPC
F16K 39/06 for taps or cocks IPC+CPC Available in IPC and CPC