Hierarchy/Derived subclasses
| 2 / 243.1 | -> 247 | -> 248 |
| -> 249 | ||
| -> 250 | ||
| -> 251 | ||
| -> 252 | ||
| -> 253 | ||
| -> 254 |
uspto searches
Patent Apps in 2/247Granted Patents in 2/247
Use the links above or do an advanced search in ppubs for:
(2/247.ccls. or 2/248.ccls. or 2/249.ccls. or 2/250.ccls. or 2/251.ccls. or 2/252.ccls. or 2/253.ccls. or 2/254.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.