USPC Class Details

Description: 91 motors: expansible chamber type / 91 motors: expansible chamber type/(472) three or more cylinders arranged in parallel radial or conical relationship with rotary transmission axis (491) radially disposed cylinders (494) cylinders and pistons form or coact with respective common elements having limited relative rotary movement

Hierarchy/Derived subclasses

91 / 472

-> 491

-> 494

-> 495

uspto searches

Patent Apps in 91/494

Granted Patents in 91/494

Use the links above or do an advanced search in ppubs for:
(91/494.ccls. or 91/495.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.

Display:

Back