Hierarchy/Derived subclasses
434 / 130 | -> 131 | -> 139 | -> 140 |
uspto searches
Patent Apps in 434/139Granted Patents in 434/139
Use the links above or do an advanced search in ppubs for:
(434/139.ccls. or 434/140.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.