|420 / 466||-> 467|
uspto searchesPatent Apps in 420/466
Granted Patents in 420/466
Advanced search in patft or appft for the hierarchy would be:
(ccl/420/466 or ccl/420/467 or ccl/420/468)
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.