Hierarchy/Derived subclasses
| 297 / 118 | -> 119 | -> 121 |
uspto searches
Patent Apps in 297/121Granted Patents in 297/121
Use the links above or do an advanced search in ppubs for:
(297/121.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.