USPC Class Details

Description: D8 tools and hardware / d8 tools and hardware/(330) locking or closing device (17) (331) lock, latch or bolt (17) (343) element or attachment (21) (344) keeper or receiver (22)

Hierarchy/Derived subclasses

D8 / 330-> 17-> 331 -> 343-> 21-> 344-> 22-> 345

uspto searches

Patent Apps in D8/344

Granted Patents in D8/344

Advanced search in patft or appft for the hierarchy would be:
(ccl/D8/344 or ccl/D8/22 or ccl/D8/345)

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.