Hierarchy/Derived subclasses
474 / 202 | -> 206 | -> 219 | -> 222 |
uspto searches
Patent Apps in 474/222Granted Patents in 474/222
Use the links above or do an advanced search in ppubs for:
(474/222.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.