Patent Classification Explorer PCE

DIFF Subgroup

F01M 13/04

having means for purifying air before leaving crankcase, e.g. removing oil

Introduced: July 1974

Full Title

Crankcase ventilating or breathing > having means for purifying air before leaving crankcase, e.g. removing oil

Of 15 combined children, 0 exist in both systems.

15 codes are CPC-only extensions.

Note: 13 CPC extensions are marked as secondary classification only.

Child Classifications

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F01M 13/0405 CPC only CPC only
F01M 13/0416 CPC only CPC only
F01M 2013/0411 2nd only CPC only CPC only
F01M 2013/0422 2nd only +1 CPC CPC only CPC only
F01M 2013/0433 2nd only CPC only CPC only
F01M 2013/0438 2nd only CPC only CPC only
F01M 2013/0444 2nd only CPC only CPC only
F01M 2013/045 2nd only CPC only CPC only
F01M 2013/0455 2nd only CPC only CPC only
F01M 2013/0461 2nd only CPC only CPC only
F01M 2013/0466 2nd only CPC only CPC only
F01M 2013/0472 2nd only CPC only CPC only
F01M 2013/0477 2nd only CPC only CPC only
F01M 2013/0483 2nd only CPC only CPC only
F01M 2013/0488 2nd only +1 CPC CPC only CPC only