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Sealing between piston and carter being provided by a bellow

Sealing between piston and carter being provided by a bellow · Cooperative Patent Classification (CPC)

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

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Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F04B39/047
Official title	{Sealing between piston and carter being provided by a bellow}
Display label	Sealing between piston and carter being provided by a bellow
Total patents	4

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.