Hierarchy/Derived subclasses
| 119 / 302 | -> 308 | -> 309 |
uspto searches
Patent Apps in 119/308Granted Patents in 119/308
Use the links above or do an advanced search in ppubs for:
(119/308.ccls. or 119/309.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.