USPC Class Details

Description: 477 interrelated power delivery controls, including engine control / 477 interrelated power delivery controls, including engine control/(7) electric engine (21) brake engaged when engine energy deactivated, brake disengaged when engine energy activated

Hierarchy/Derived subclasses

477 / 7-> 21-> 22
  -> 23

uspto searches

Patent Apps in 477/21

Granted Patents in 477/21

Use the links above or do an advanced search in ppubs for:
(477/21.ccls. or 477/22.ccls. or 477/23.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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