Hierarchy/Derived subclasses
| 188 / 67 | -> 71.1 | -> 73.1 | -> 73.2 |
uspto searches
Patent Apps in 188/73.1Granted Patents in 188/73.1
Use the links above or do an advanced search in ppubs for:
(188/73.1.ccls. or 188/73.2.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.