Hierarchy/Derived subclasses
235 / 419 | -> 423 |
uspto searches
Patent Apps in 235/423Granted Patents in 235/423
Use the links above or do an advanced search in ppubs for:
(235/423.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.