Hierarchy/Derived subclasses
| 132 / 212 | -> 53 | -> 54 | -> 55 |
| -> 56 |
uspto searches
Patent Apps in 132/53Granted Patents in 132/53
Use the links above or do an advanced search in ppubs for:
(132/53.ccls. or 132/54.ccls. or 132/55.ccls. or 132/56.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.