USPC Class Details

Description: 91 motors: expansible chamber type / 91 motors: expansible chamber type/(218) cyclically operable (236) multiple exhaust passages (e.g., compression control, etc.) (243) working member controlled exhaust port with valved second exhaust passage

Hierarchy/Derived subclasses

91 / 218

-> 236

-> 243

uspto searches

Patent Apps in 91/243

Granted Patents in 91/243

Use the links above or do an advanced search in ppubs for:
(91/243.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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