Hierarchy/Derived subclasses
| 242 / 370 | -> 223 | -> 285 | -> 291 | -> 292 | -> 293 |
| -> 294 |
uspto searches
Patent Apps in 242/291Granted Patents in 242/291
Use the links above or do an advanced search in ppubs for:
(242/291.ccls. or 242/292.ccls. or 242/293.ccls. or 242/294.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.