Hierarchy/Derived subclasses
| 213 / 75r | -> 176 | -> 177 |
uspto searches
Patent Apps in 213/177Granted Patents in 213/177
Use the links above or do an advanced search in ppubs for:
(213/177.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.