Patent Classification Explorer PCE

DIFF Main Group

F04C 27/00

Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids

Introduced: September 1968

CPC subdivides this area 5x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

Child Classifications

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F04C 27/001 +3 CPC CPC only CPC only
F04C 27/005 +1 CPC CPC only CPC only
F04C 27/007 CPC only CPC only
F04C 27/008 +1 CPC CPC only CPC only
F04C 27/02 Liquid sealing for high-vacuum pumps IPC+CPC Available in IPC and CPC