Hierarchy/Derived subclasses
| 91 / 196 | -> 210 | -> 211 | -> 212 |
| -> 213 | |||
| -> 214 | |||
| -> 215 |
uspto searches
Patent Apps in 91/210Granted Patents in 91/210
Use the links above or do an advanced search in ppubs for:
(91/210.ccls. or 91/211.ccls. or 91/212.ccls. or 91/213.ccls. or 91/214.ccls. or 91/215.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.