Hierarchy/Derived subclasses
505 / 825 | -> 917 | -> 922 |
uspto searches
Patent Apps in 505/922Granted Patents in 505/922
Use the links above or do an advanced search in ppubs for:
(505/922.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.