USPC Class Details

Description: 418 rotary expansible chamber devices / 418 rotary expansible chamber devices/(104) with mechanical sealing (112) seal on working member periphery separates inlet and outlet ports (113) seal on working member peripheral projection engages cylinder working chamber surface (e.g., apex seals) (120) with axially movable side seal

Hierarchy/Derived subclasses

418 / 104

-> 112

-> 113

-> 120

-> 121

uspto searches

Patent Apps in 418/120

Granted Patents in 418/120

Use the links above or do an advanced search in ppubs for:
(418/120.ccls. or 418/121.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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