Hierarchy/Derived subclasses
| 264 / 1.1 | -> 1.21 | -> 1.22 | -> sc | -> y |
| -> 1.23 |
uspto searches
Patent Apps in 264/1.21Granted Patents in 264/1.21
Use the links above or do an advanced search in ppubs for:
(264/1.21.ccls. or 264/1.22.ccls. or 264/sc.ccls. or 264/y.ccls. or 264/1.23.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.