Hierarchy/Derived subclasses
| 215 / 40 | -> 41 |
uspto searches
Patent Apps in 215/41Granted Patents in 215/41
Use the links above or do an advanced search in ppubs for:
(215/41.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.