Hierarchy/Derived subclasses
70 / 57 | -> 77 | -> 158 | -> 159 | -> 160 | -> 161 |
-> 162 |
uspto searches
Patent Apps in 70/159Granted Patents in 70/159
Use the links above or do an advanced search in ppubs for:
(70/159.ccls. or 70/160.ccls. or 70/161.ccls. or 70/162.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.