USPC Class Details

Description: 91 motors: expansible chamber type / 91 motors: expansible chamber type/(218) cyclically operable (265) relatively movable inlet and exhaust valves (270) inlet and exhaust valve movable about an axis

Hierarchy/Derived subclasses

91 / 218

-> 265

-> 270

uspto searches

Patent Apps in 91/270

Granted Patents in 91/270

Use the links above or do an advanced search in ppubs for:
(91/270.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.

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