Hierarchy/Derived subclasses
| 472 / 135 |
uspto searches
Patent Apps in 472/135Granted Patents in 472/135
Use the links above or do an advanced search in ppubs for:
(472/135.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.