Hierarchy/Derived subclasses
| 19 / 65r | -> 66r | -> 66.1 | -> 66.2 | |
| -> 200 | -> 201 | |||
| -> 202 | -> 203 | |||
| -> 204 | -> 205 | |||
| -> 66cc | ||||
| -> 66t |
uspto searches
Patent Apps in 19/66rGranted Patents in 19/66r
Use the links above or do an advanced search in ppubs for:
(19/66r.ccls. or 19/66.1.ccls. or 19/66.2.ccls. or 19/200.ccls. or 19/201.ccls. or 19/202.ccls. or 19/203.ccls. or 19/204.ccls. or 19/205.ccls. or 19/66cc.ccls. or 19/66t.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.