Hierarchy/Derived subclasses
152 / 151 | -> 208 | -> 231 | -> 232 | -> 233 | -> 236 | -> 237 |
uspto searches
Patent Apps in 152/237Granted Patents in 152/237
Use the links above or do an advanced search in ppubs for:
(152/237.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.