Hierarchy/Derived subclasses
| 70 / 266 | -> 286 | -> 320 | -> 321 | -> 322 | |
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uspto searches
Patent Apps in 70/320Granted Patents in 70/320
Use the links above or do an advanced search in ppubs for:
(70/320.ccls. or 70/321.ccls. or 70/322.ccls. or 70/323.ccls. or 70/324.ccls. or 70/325.ccls. or 70/326.ccls. or 70/327.ccls. or 70/328.ccls. or 70/329.ccls. or 70/330.ccls. or 70/331.ccls. or 70/332.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.