Hierarchy/Derived subclasses
| 213 / 75r | -> 77 | -> 78 | -> 79 | -> 80 | -> 81 |
| -> 82 | -> 83 | ||||
| -> 84 | |||||
| -> 85 | |||||
| -> 86 | -> 87 |
uspto searches
Patent Apps in 213/79Granted Patents in 213/79
Use the links above or do an advanced search in ppubs for:
(213/79.ccls. or 213/80.ccls. or 213/81.ccls. or 213/82.ccls. or 213/83.ccls. or 213/84.ccls. or 213/85.ccls. or 213/86.ccls. or 213/87.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.