Hierarchy/Derived subclasses
| 249 / 1 | -> 2 | -> 3 | -> 4 | -> 5 |
| -> 6 | ||||
| -> 7 | ||||
| -> 8 | ||||
| -> 9 |
uspto searches
Patent Apps in 249/2Granted Patents in 249/2
Use the links above or do an advanced search in ppubs for:
(249/2.ccls. or 249/3.ccls. or 249/4.ccls. or 249/5.ccls. or 249/6.ccls. or 249/7.ccls. or 249/8.ccls. or 249/9.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.