Hierarchy/Derived subclasses
| 99 / 323.4 | -> 323.5 | -> 323.9 | -> 323.11 |
uspto searches
Patent Apps in 99/323.9Granted Patents in 99/323.9
Use the links above or do an advanced search in ppubs for:
(99/323.9.ccls. or 99/323.11.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.