Hierarchy/Derived subclasses
| 70 / 57 | -> 174 | -> 229 | -> 230 |
| -> 231 | |||
| -> 232 |
uspto searches
Patent Apps in 70/229Granted Patents in 70/229
Use the links above or do an advanced search in ppubs for:
(70/229.ccls. or 70/230.ccls. or 70/231.ccls. or 70/232.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.