Hierarchy/Derived subclasses
454 / 196 | -> 214 | -> 223 |
uspto searches
Patent Apps in 454/223Granted Patents in 454/223
Use the links above or do an advanced search in ppubs for:
(454/223.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.