Hierarchy/Derived subclasses
| 396 / 213 | -> 238 | -> 239 |
uspto searches
Patent Apps in 396/238Granted Patents in 396/238
Use the links above or do an advanced search in ppubs for:
(396/238.ccls. or 396/239.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.