Hierarchy/Derived subclasses
| 452 / 141 | -> 146 | -> 147 |
uspto searches
Patent Apps in 452/147Granted Patents in 452/147
Use the links above or do an advanced search in ppubs for:
(452/147.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.