Hierarchy/Derived subclasses
| 453 / 1 | -> 2 |
uspto searches
Patent Apps in 453/1Granted Patents in 453/1
Use the links above or do an advanced search in ppubs for:
(453/1.ccls. or 453/2.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.