Hierarchy/Derived subclasses
312 / 9.1 | -> 9.9 | -> 9.11 | -> 9.27 | -> 9.28 |
uspto searches
Patent Apps in 312/9.27Granted Patents in 312/9.27
Use the links above or do an advanced search in ppubs for:
(312/9.27.ccls. or 312/9.28.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.