Hierarchy/Derived subclasses
| 99 / 450.1 | -> 450.4 | -> 450.5 |
uspto searches
Patent Apps in 99/450.4Granted Patents in 99/450.4
Use the links above or do an advanced search in ppubs for:
(99/450.4.ccls. or 99/450.5.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.