Hierarchy/Derived subclasses
| 312 / 35 | -> 42 | -> 43 | ||
| -> 45 | ||||
| -> 49 | ||||
| -> 50 | -> 59 | |||
| -> 60 | -> 61 | |||
| -> 71 |
uspto searches
Patent Apps in 312/42Granted Patents in 312/42
Use the links above or do an advanced search in ppubs for:
(312/42.ccls. or 312/43.ccls. or 312/45.ccls. or 312/49.ccls. or 312/50.ccls. or 312/59.ccls. or 312/60.ccls. or 312/61.ccls. or 312/71.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.