Hierarchy/Derived subclasses
| 254 / 84 | -> 85 |
uspto searches
Patent Apps in 254/84Granted Patents in 254/84
Use the links above or do an advanced search in ppubs for:
(254/84.ccls. or 254/85.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.