Hierarchy/Derived subclasses
| 452 / 30 | -> 32 | -> 33 | -> 34 |
uspto searches
Patent Apps in 452/32Granted Patents in 452/32
Use the links above or do an advanced search in ppubs for:
(452/32.ccls. or 452/33.ccls. or 452/34.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.