Hierarchy/Derived subclasses
| 266 / 274 | -> 279 |
uspto searches
Patent Apps in 266/279Granted Patents in 266/279
Use the links above or do an advanced search in ppubs for:
(266/279.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.