Hierarchy/Derived subclasses
| 398 / 182 | -> 183 | -> 189 | -> 190 |
| -> 191 |
uspto searches
Patent Apps in 398/189Granted Patents in 398/189
Use the links above or do an advanced search in ppubs for:
(398/189.ccls. or 398/190.ccls. or 398/191.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.