Hierarchy/Derived subclasses
| 177 / 52 | -> 53 | |
| -> 54 | -> 55 | |
| -> 56 | -> 57 |
uspto searches
Patent Apps in 177/52Granted Patents in 177/52
Use the links above or do an advanced search in ppubs for:
(177/52.ccls. or 177/53.ccls. or 177/54.ccls. or 177/55.ccls. or 177/56.ccls. or 177/57.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.