Hierarchy/Derived subclasses
| 235 / 33 | -> 36 | -> 37 |
| -> 38 | ||
| -> 39 |
uspto searches
Patent Apps in 235/36Granted Patents in 235/36
Use the links above or do an advanced search in ppubs for:
(235/36.ccls. or 235/37.ccls. or 235/38.ccls. or 235/39.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.