Hierarchy/Derived subclasses
| 177 / 238 | -> 239 | -> 240 | -> 241 | -> 242 |
| -> 243 |
uspto searches
Patent Apps in 177/238Granted Patents in 177/238
Use the links above or do an advanced search in ppubs for:
(177/238.ccls. or 177/239.ccls. or 177/240.ccls. or 177/241.ccls. or 177/242.ccls. or 177/243.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.