Hierarchy/Derived subclasses
152 / 151 | -> 208 | -> 231 | -> 232 | -> 233 | -> 234 | -> 235 |
-> 236 | -> 237 | |||||
-> 238 |
uspto searches
Patent Apps in 152/233Granted Patents in 152/233
Use the links above or do an advanced search in ppubs for:
(152/233.ccls. or 152/234.ccls. or 152/235.ccls. or 152/236.ccls. or 152/237.ccls. or 152/238.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.