Hierarchy/Derived subclasses
| 392 / 441 | -> 449 | -> 450 |
uspto searches
Patent Apps in 392/450Granted Patents in 392/450
Use the links above or do an advanced search in ppubs for:
(392/450.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.