Hierarchy/Derived subclasses
| 70 / 57 | -> 233 | -> 234 |
| -> 235 | ||
| -> 236 |
uspto searches
Patent Apps in 70/233Granted Patents in 70/233
Use the links above or do an advanced search in ppubs for:
(70/233.ccls. or 70/234.ccls. or 70/235.ccls. or 70/236.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.