Hierarchy/Derived subclasses
| 380 / 277 | -> 278 | -> 279 | -> 280 |
| -> 281 | |||
| -> 282 |
uspto searches
Patent Apps in 380/279Granted Patents in 380/279
Use the links above or do an advanced search in ppubs for:
(380/279.ccls. or 380/280.ccls. or 380/281.ccls. or 380/282.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.