Hierarchy/Derived subclasses
| 70 / 57 | -> 58 | -> 63 | -> 64 | -> 65 | |
| -> 66 | |||||
| -> 67 | -> 68 |
uspto searches
Patent Apps in 70/64Granted Patents in 70/64
Use the links above or do an advanced search in ppubs for:
(70/64.ccls. or 70/65.ccls. or 70/66.ccls. or 70/67.ccls. or 70/68.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.