Hierarchy/Derived subclasses
| 417 / 229 | -> 231 | -> 232 |
| -> 233 |
uspto searches
Patent Apps in 417/231Granted Patents in 417/231
Use the links above or do an advanced search in ppubs for:
(417/231.ccls. or 417/232.ccls. or 417/233.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.