|343 / 700r||-> 878||-> 880||-> 881|
uspto searchesPatent Apps in 343/880
Granted Patents in 343/880
Advanced search in patft or appft for the hierarchy would be:
(ccl/343/880 or ccl/343/881 or ccl/343/882 or ccl/343/883)
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.