Hierarchy/Derived subclasses
164 / 1 | -> 6 | -> 15 | -> 520 | -> 525 | -> 526 | -> 527 |
uspto searches
Patent Apps in 164/526Granted Patents in 164/526
Use the links above or do an advanced search in ppubs for:
(164/526.ccls. or 164/527.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.