Hierarchy/Derived subclasses
| 236 / 67 | -> 74r | -> 78r | -> 78d |
uspto searches
Patent Apps in 236/78dGranted Patents in 236/78d
Use the links above or do an advanced search in ppubs for:
(236/78d.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.