Hierarchy/Derived subclasses
| 436 / 823 |
uspto searches
Patent Apps in 436/823Granted Patents in 436/823
Use the links above or do an advanced search in ppubs for:
(436/823.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.