Hierarchy/Derived subclasses
| 252 / 79.1 | -> 79.2 | -> 79.3 |
| -> 79.4 |
uspto searches
Patent Apps in 252/79.2Granted Patents in 252/79.2
Use the links above or do an advanced search in ppubs for:
(252/79.2.ccls. or 252/79.3.ccls. or 252/79.4.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.