Hierarchy/Derived subclasses
| 152 / 151 | -> 208 | -> 217 | -> 219 |
uspto searches
Patent Apps in 152/219Granted Patents in 152/219
Use the links above or do an advanced search in ppubs for:
(152/219.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.