Hierarchy/Derived subclasses
| 455 / 403 | -> 422.1 | -> 450 | -> 453 |
uspto searches
Patent Apps in 455/453Granted Patents in 455/453
Use the links above or do an advanced search in ppubs for:
(455/453.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.