USPC Class Details

Description: 254 implements or apparatus for applying pushing or pulling force / 254 implements or apparatus for applying pushing or pulling force/(264) apparatus for hauling or hoisting load, including driven device which contacts and pulls on cable (266) device includes rotatably driven, cable contacting drum (278) plural drums or drum with plural distinct sections (294) having common drive source or mechanically interlinked drive trains (317) including clutch mechanism in drive having coaxial, rotatable, relatively shiftable axially, power transmitting components (319) components having frictional contact surface

Hierarchy/Derived subclasses

254 / 264-> 266-> 278-> 294-> 317-> 319

uspto searches

Patent Apps in 254/319

Granted Patents in 254/319

Use the links above or do an advanced search in ppubs for:
(254/319.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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