USPC Class Details

Description: 60 power plants / 60 power plants/(272) internal combustion engine with treatment or handling of exhaust gas (320) exhaust gas or exhaust system element heated, cooled, or used as a heat source (321) cooled manifold

Hierarchy/Derived subclasses

60 / 272

-> 320

-> 321

uspto searches

Patent Apps in 60/321

Granted Patents in 60/321

Use the links above or do an advanced search in ppubs for:
(60/321.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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