Hierarchy/Derived subclasses
| 217 / 5 | -> 18 | -> 30 | -> 31 | -> 32 |
| -> 33 | ||||
| -> 34 |
uspto searches
Patent Apps in 217/30Granted Patents in 217/30
Use the links above or do an advanced search in ppubs for:
(217/30.ccls. or 217/31.ccls. or 217/32.ccls. or 217/33.ccls. or 217/34.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.