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the surfaces of the inner and outer member, forming the working space, being surfaces of revolution

the surfaces of the inner and outer member, forming the working space, being surfaces of revolution · Cooperative Patent Classification (CPC)

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

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CPC classification statistics
Metric	Value
CPC code	F04C2/3564
Official title	{the surfaces of the inner and outer member, forming the working space, being surfaces of revolution}
Display label	the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
Total patents	8

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Filing activity over the last five years is stable.

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