Hierarchy/Derived subclasses
| 175 / 2 | -> 4.52 |
uspto searches
Patent Apps in 175/4.52Granted Patents in 175/4.52
Use the links above or do an advanced search in ppubs for:
(175/4.52.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.