Hierarchy/Derived subclasses
| 236 / 67 | -> 69 | -> 70 |
uspto searches
Patent Apps in 236/69Granted Patents in 236/69
Use the links above or do an advanced search in ppubs for:
(236/69.ccls. or 236/70.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.