Hierarchy/Derived subclasses
| 380 / 287 | -> 22 | |
| -> 26 | -> 27 | |
| -> 51 | ||
| -> 52 | -> 53 |
uspto searches
Patent Apps in 380/287Granted Patents in 380/287
Use the links above or do an advanced search in ppubs for:
(380/287.ccls. or 380/22.ccls. or 380/26.ccls. or 380/27.ccls. or 380/51.ccls. or 380/52.ccls. or 380/53.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.