Hierarchy/Derived subclasses
| 249 / 117 | -> 119 | -> 120 |
uspto searches
Patent Apps in 249/120Granted Patents in 249/120
Use the links above or do an advanced search in ppubs for:
(249/120.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.