Hierarchy/Derived subclasses
| 454 / 173 | -> 174 | -> 175 | -> 176 | |
| -> 177 | -> 178 | |||
| -> 179 | -> 180 | |||
| -> 181 |
uspto searches
Patent Apps in 454/175Granted Patents in 454/175
Use the links above or do an advanced search in ppubs for:
(454/175.ccls. or 454/176.ccls. or 454/177.ccls. or 454/178.ccls. or 454/179.ccls. or 454/180.ccls. or 454/181.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.