USPC Class Details – HistoricIP

Description: 60 power plants / 60 power plants/(272) internal combustion engine with treatment or handling of exhaust gas (277) having sensor or indicator of malfunction, unsafeness, or disarray of treater (e.g., fusible link, etc.)

Hierarchy/Derived subclasses

60 / 272

-> 277

uspto searches

Patent Apps in 60/277

Granted Patents in 60/277

Use the links above or do an advanced search in ppubs for:
(60/277.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.