Hierarchy/Derived subclasses
152 / 151 | -> 208 | -> 209.1 | -> 209.8 | -> 209.9 |
uspto searches
Patent Apps in 152/209.8Granted Patents in 152/209.8
Use the links above or do an advanced search in ppubs for:
(152/209.8.ccls. or 152/209.9.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.