Hierarchy/Derived subclasses
| 455 / 403 | -> 422.1 | -> 456.1 | -> 457 |
uspto searches
Patent Apps in 455/457Granted Patents in 455/457
Use the links above or do an advanced search in ppubs for:
(455/457.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.