USPC Class Details

Description: 418 rotary expansible chamber devices / 418 rotary expansible chamber devices/(104) with mechanical sealing (140) seal element between working member and cylinder (142) on working member

Hierarchy/Derived subclasses

418 / 104

-> 140

-> 142

-> 143

uspto searches

Patent Apps in 418/142

Granted Patents in 418/142

Use the links above or do an advanced search in ppubs for:
(418/142.ccls. or 418/143.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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