Hierarchy/Derived subclasses
| 453 / 3 | -> 9 | -> 12 | -> 13 |
uspto searches
Patent Apps in 453/12Granted Patents in 453/12
Use the links above or do an advanced search in ppubs for:
(453/12.ccls. or 453/13.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.