Hierarchy/Derived subclasses
| 23 / 293r | -> 295r | -> 302r | -> 303 |
uspto searches
Patent Apps in 23/303Granted Patents in 23/303
Use the links above or do an advanced search in ppubs for:
(23/303.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.