Hierarchy/Derived subclasses
157 / 1.1 | -> 1.17 | -> 1.26 | -> 1.28 |
uspto searches
Patent Apps in 157/1.28Granted Patents in 157/1.28
Use the links above or do an advanced search in ppubs for:
(157/1.28.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.