Hierarchy/Derived subclasses
501 / 1 | -> 11 | -> 53 | -> 73 | -> 74 | -> 75 | -> 76 |
uspto searches
Patent Apps in 501/75Granted Patents in 501/75
Use the links above or do an advanced search in ppubs for:
(501/75.ccls. or 501/76.ccls.)
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.