Hierarchy/Derived subclasses
| 368 / 220 | -> 221 |
| -> 222 |
uspto searches
Patent Apps in 368/220Granted Patents in 368/220
Use the links above or do an advanced search in ppubs for:
(368/220.ccls. or 368/221.ccls. or 368/222.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.