USPC Class Details

Description: 91 motors: expansible chamber type / 91 motors: expansible chamber type/(218) cyclically operable (235) working chamber receives controlled motive fluid supply from opposed chamber having constant supply (321) (417)

Hierarchy/Derived subclasses

91 / 218-> 235-> 321-> 417

uspto searches

Patent Apps in 91/235

Granted Patents in 91/235

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