Hierarchy/Derived subclasses
264 / 37.1 | -> 37.3 | -> 37.33 |
uspto searches
Patent Apps in 264/37.33Granted Patents in 264/37.33
Use the links above or do an advanced search in ppubs for:
(264/37.33.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.