USPC Class Details

Description: D8 tools and hardware / d8 tools and hardware/(14) other tools and implements (90) abrading (91) sharpener (92) razor or razor blade

Hierarchy/Derived subclasses

D8 / 14-> 90-> 91-> 92

uspto searches

Patent Apps in D8/92

Granted Patents in D8/92

Advanced search in patft or appft for the hierarchy would be:

Press the Search button below to send the query to the USPTO site. (Granted patents search)

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.