USPC Class Details – HistoricIP

Description: 60 power plants / 60 power plants/(272) internal combustion engine with treatment or handling of exhaust gas (282) by means producing a chemical reaction of a component of the exhaust gas (283) with means handling crankcase, carburetor, or gas tank vapor

Hierarchy/Derived subclasses

60 / 272

-> 282

-> 283

uspto searches

Patent Apps in 60/283

Granted Patents in 60/283

Use the links above or do an advanced search in ppubs for:
(60/283.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.