Hierarchy/Derived subclasses
| 213 / 7 | -> 62r | -> 64 | -> 67r | -> 68 | ||
| -> 69 | -> 70 | -> 71 | ||||
| -> 72 | ||||||
| -> 67a |
uspto searches
Patent Apps in 213/67RGranted Patents in 213/67R
Use the links above or do an advanced search in ppubs for:
()
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.