Hierarchy/Derived subclasses
411 / 81 | -> 166 | -> 167 |
-> 168 | ||
-> 169 | ||
-> 170 | ||
-> 171 |
uspto searches
Patent Apps in 411/166Granted Patents in 411/166
Use the links above or do an advanced search in ppubs for:
(411/166.ccls. or 411/167.ccls. or 411/168.ccls. or 411/169.ccls. or 411/170.ccls. or 411/171.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.