Hierarchy/Derived subclasses
| 292 / 2 | -> 137 | -> 163 | -> 164 | -> 172 |
uspto searches
Patent Apps in 292/172Granted Patents in 292/172
Use the links above or do an advanced search in ppubs for:
(292/172.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.