Hierarchy/Derived subclasses
| 235 / 435 | -> 439 | -> 454 | -> 458 | -> 459 | -> 460 |
| -> 461 |
uspto searches
Patent Apps in 235/458Granted Patents in 235/458
Use the links above or do an advanced search in ppubs for:
(235/458.ccls. or 235/459.ccls. or 235/460.ccls. or 235/461.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.