Hierarchy/Derived subclasses
| 132 / 212 | -> 216 | -> 218 |
uspto searches
Patent Apps in 132/218Granted Patents in 132/218
Use the links above or do an advanced search in ppubs for:
(132/218.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.