Hierarchy/Derived subclasses
454 / 166 | -> 167 |
uspto searches
Patent Apps in 454/167Granted Patents in 454/167
Use the links above or do an advanced search in ppubs for:
(454/167.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.