Hierarchy/Derived subclasses
180 / 21 | -> 218 | -> 219 | -> 230 |
uspto searches
Patent Apps in 180/230Granted Patents in 180/230
Use the links above or do an advanced search in ppubs for:
(180/230.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.