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with vanes hinged to the inner member and reciprocating with respect to the outer member

with vanes hinged to the inner member and reciprocating with respect to the outer member · Cooperative Patent Classification (CPC)

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

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F04C2/324
Official title	with vanes hinged to the inner member and reciprocating with respect to the outer member
Display label	with vanes hinged to the inner member and reciprocating with respect to the outer member
Total patents	8

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

Filing activity appears to be declining based on the most recent years.

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