Hierarchy/Derived subclasses
| 307 / 11 | -> 31 | -> 32 | |
| -> 33 | -> 34 | ||
| -> 35 |
uspto searches
Patent Apps in 307/31Granted Patents in 307/31
Use the links above or do an advanced search in ppubs for:
(307/31.ccls. or 307/32.ccls. or 307/33.ccls. or 307/34.ccls. or 307/35.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.