Hierarchy/Derived subclasses
| 418 / 225 | -> 226 |
uspto searches
Patent Apps in 418/226Granted Patents in 418/226
Use the links above or do an advanced search in ppubs for:
(418/226.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.