Hierarchy/Derived subclasses
D19 / 34.1 | -> 34.3 | -> 34.4 | -> 34.5 |
uspto searches
Patent Apps in D19/34.4Granted Patents in D19/34.4
Use the links above or do an advanced search in ppubs for:
(D19/34.4.ccls. or D19/34.5.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.