Hierarchy/Derived subclasses
| 226 / 168 | -> s | -> 181 | -> 182 | |
| -> 183 | ||||
| -> 184 | ||||
| -> 185 | ||||
| -> 186 | -> 187 |
uspto searches
Patent Apps in 226/181Granted Patents in 226/181
Use the links above or do an advanced search in ppubs for:
(226/181.ccls. or 226/182.ccls. or 226/183.ccls. or 226/184.ccls. or 226/185.ccls. or 226/186.ccls. or 226/187.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.