Hierarchy/Derived subclasses
| 352 / 38 | -> 44 | -> 48 | -> 49 | |
| -> 50 | -> 51 | |||
| -> 52 | ||||
| -> 53 | ||||
| -> 54 |
uspto searches
Patent Apps in 352/48Granted Patents in 352/48
Use the links above or do an advanced search in ppubs for:
(352/48.ccls. or 352/49.ccls. or 352/50.ccls. or 352/51.ccls. or 352/52.ccls. or 352/53.ccls. or 352/54.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.