|322 / 44||-> 59||-> 72||-> 73|
uspto searchesPatent Apps in 322/72
Granted Patents in 322/72
Advanced search in patft or appft for the hierarchy would be:
(ccl/322/72 or ccl/322/73 or ccl/322/74)
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.