Hierarchy/Derived subclasses
505 / 150 | -> 204 |
uspto searches
Patent Apps in 505/204Granted Patents in 505/204
Use the links above or do an advanced search in ppubs for:
(505/204.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.