Hierarchy/Derived subclasses
| 434 / 239 | -> 240 |
uspto searches
Patent Apps in 434/240Granted Patents in 434/240
Use the links above or do an advanced search in ppubs for:
(434/240.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.