USPC Class Details

Description: D8 tools and hardware / d8 tools and hardware/(349) fastener, support or mount not elsewhere specified (382) fastener or coupling (38) (388) piercing (391) nail or spike (39)

Hierarchy/Derived subclasses

D8 / 349-> 382-> 38-> 388-> 391-> 39-> 392
      -> 393

uspto searches

Patent Apps in D8/391

Granted Patents in D8/391

Advanced search in patft or appft for the hierarchy would be:
(ccl/D8/391 or ccl/D8/39 or ccl/D8/392 or ccl/D8/393)

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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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