Hierarchy/Derived subclasses
| 66 / 90 | -> 104 | -> 105 | ||
| -> 106 | ||||
| -> 107 | -> 108r | -> 108a | ||
| -> 109 | -> 110 |
uspto searches
Patent Apps in 66/104Granted Patents in 66/104
Use the links above or do an advanced search in ppubs for:
(66/104.ccls. or 66/105.ccls. or 66/106.ccls. or 66/107.ccls. or 66/108r.ccls. or 66/108a.ccls. or 66/109.ccls. or 66/110.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.