Hierarchy/Derived subclasses
| 249 / 205 | -> 207 | -> 219.1 | -> 219.2 |
uspto searches
Patent Apps in 249/219.1Granted Patents in 249/219.1
Use the links above or do an advanced search in ppubs for:
(249/219.1.ccls. or 249/219.2.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.