Hierarchy/Derived subclasses
| 164 / 1 | -> 47 | -> 91 | -> 92.1 |
uspto searches
Patent Apps in 164/92.1Granted Patents in 164/92.1
Use the links above or do an advanced search in ppubs for:
(164/92.1.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.