Hierarchy/Derived subclasses
301 / 5.1 | -> 41.1 | -> 53 |
uspto searches
Patent Apps in 301/53Granted Patents in 301/53
Use the links above or do an advanced search in ppubs for:
(301/53.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.