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the vanes positively engaging, with circumferential play, an outer rotatable member

the vanes positively engaging, with circumferential play, an outer rotatable member · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

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CPC classification statistics
Metric	Value
CPC code	F04C18/348
Official title	the vanes positively engaging, with circumferential play, an outer rotatable member
Display label	the vanes positively engaging, with circumferential play, an outer rotatable member
Total patents	10

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is growing.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.