Hierarchy/Derived subclasses
49 / 149 | -> 163 | -> 169 | -> 171 |
uspto searches
Patent Apps in 49/171Granted Patents in 49/171
Use the links above or do an advanced search in ppubs for:
(49/171.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.