Hierarchy/Derived subclasses
| 213 / 7 | -> 62r | -> 64 | -> 65 | |||
| -> 66 | ||||||
| -> 67r | -> 68 | |||||
| -> 69 | -> 70 | -> 71 | ||||
| -> 72 | ||||||
| -> 67a |
uspto searches
Patent Apps in 213/64Granted Patents in 213/64
Use the links above or do an advanced search in ppubs for:
(213/64.ccls. or 213/65.ccls. or 213/66.ccls. or 213/67r.ccls. or 213/68.ccls. or 213/69.ccls. or 213/70.ccls. or 213/71.ccls. or 213/72.ccls. or 213/67a.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.