Hierarchy/Derived subclasses
504 / 103 | -> 109 |
uspto searches
Patent Apps in 504/109Granted Patents in 504/109
Use the links above or do an advanced search in ppubs for:
(504/109.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.