Hierarchy/Derived subclasses
| 271 / 8.1 | -> 226 | -> 245 | -> 246 | -> 247 |
uspto searches
Patent Apps in 271/245Granted Patents in 271/245
Use the links above or do an advanced search in ppubs for:
(271/245.ccls. or 271/246.ccls. or 271/247.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.