Hierarchy/Derived subclasses
| 213 / 75r | -> 77 | -> 100r | -> 104 | -> 109 | -> 115 | -> 119 | -> 120 | |
| -> 121 | ||||||||
| -> 122 | -> 123 | |||||||
| -> 124 |
uspto searches
Patent Apps in 213/119Granted Patents in 213/119
Use the links above or do an advanced search in ppubs for:
(213/119.ccls. or 213/120.ccls. or 213/121.ccls. or 213/122.ccls. or 213/123.ccls. or 213/124.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.