Hierarchy/Derived subclasses
| 368 / 223 | -> 239 | -> 240 |
| -> 241 | ||
| -> 242 |
uspto searches
Patent Apps in 368/239Granted Patents in 368/239
Use the links above or do an advanced search in ppubs for:
(368/239.ccls. or 368/240.ccls. or 368/241.ccls. or 368/242.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.