Hierarchy/Derived subclasses
| 222 / 153.01 | -> 153.04 |
uspto searches
Patent Apps in 222/153.04Granted Patents in 222/153.04
Use the links above or do an advanced search in ppubs for:
(222/153.04.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.