Hierarchy/Derived subclasses
| 68 / 3r | -> 63 | -> 64 | -> 65 | |||
| -> 66 | -> 67 | -> 68 | ||||
| -> 69 | ||||||
| -> 70 | -> 71 | |||||
| -> 72 | -> 73 | |||||
| -> 74 | -> 75 | -> 76 | ||||
| -> 77 | -> 78 | |||||
| -> 79 | -> 80 | |||||
| -> 81 | ||||||
| -> 82 | -> 83 |
uspto searches
Patent Apps in 68/64Granted Patents in 68/64
Use the links above or do an advanced search in ppubs for:
(68/64.ccls. or 68/65.ccls. or 68/66.ccls. or 68/67.ccls. or 68/68.ccls. or 68/69.ccls. or 68/70.ccls. or 68/71.ccls. or 68/72.ccls. or 68/73.ccls. or 68/74.ccls. or 68/75.ccls. or 68/76.ccls. or 68/77.ccls. or 68/78.ccls. or 68/79.ccls. or 68/80.ccls. or 68/81.ccls. or 68/82.ccls. or 68/83.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.