Hierarchy/Derived subclasses
| 266 / 274 | -> 275 | -> 276 | -> 277 |
uspto searches
Patent Apps in 266/277Granted Patents in 266/277
Use the links above or do an advanced search in ppubs for:
(266/277.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.