Hierarchy/Derived subclasses
| 436 / 815 | -> 817 | -> 818 |
uspto searches
Patent Apps in 436/817Granted Patents in 436/817
Use the links above or do an advanced search in ppubs for:
(436/817.ccls. or 436/818.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.