Hierarchy/Derived subclasses
| 604 / 11 | -> 12 |
uspto searches
Patent Apps in 604/12Granted Patents in 604/12
Use the links above or do an advanced search in ppubs for:
(604/12.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.