Hierarchy/Derived subclasses
| 901 / 30 | -> 31 | -> 32 | -> 33 |
| -> 34 | |||
| -> 35 |
uspto searches
Patent Apps in 901/32Granted Patents in 901/32
Use the links above or do an advanced search in ppubs for:
(901/32.ccls. or 901/33.ccls. or 901/34.ccls. or 901/35.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.