Hierarchy/Derived subclasses
| 70 / 57 | -> 237 | -> 242 | -> 243 |
| -> 244 |
uspto searches
Patent Apps in 70/242Granted Patents in 70/242
Use the links above or do an advanced search in ppubs for:
(70/242.ccls. or 70/243.ccls. or 70/244.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.