Hierarchy/Derived subclasses
| 188 / 67 | -> 68 |
uspto searches
Patent Apps in 188/68Granted Patents in 188/68
Use the links above or do an advanced search in ppubs for:
(188/68.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.