USPC Class Details

Description: 91 motors: expansible chamber type / 91 motors: expansible chamber type/(218) cyclically operable (321) motive fluid constantly applied to one working member face (235) (417)

Hierarchy/Derived subclasses

91 / 218

-> 321

-> 235

-> 417

uspto searches

Patent Apps in 91/321

Granted Patents in 91/321

Use the links above or do an advanced search in ppubs for:
(91/321.ccls. or 91/235.ccls. or 91/417.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