Hierarchy/Derived subclasses
| 312 / 194 | -> 195 |
| -> 196 | |
| -> 197 |
uspto searches
Patent Apps in 312/194Granted Patents in 312/194
Use the links above or do an advanced search in ppubs for:
(312/194.ccls. or 312/195.ccls. or 312/196.ccls. or 312/197.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.