Hierarchy/Derived subclasses
| 122 / 209.1 | -> 214 | -> 218 | -> 219 |
uspto searches
Patent Apps in 122/218Granted Patents in 122/218
Use the links above or do an advanced search in ppubs for:
(122/218.ccls. or 122/219.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.