Hierarchy/Derived subclasses
| 312 / 183 | -> 190 | -> 191 |
| -> 192 |
uspto searches
Patent Apps in 312/190Granted Patents in 312/190
Use the links above or do an advanced search in ppubs for:
(312/190.ccls. or 312/191.ccls. or 312/192.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.