Hierarchy/Derived subclasses
| 19 / 144 | -> 150 | -> 152 |
uspto searches
Patent Apps in 19/152Granted Patents in 19/152
Use the links above or do an advanced search in ppubs for:
(19/152.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.