Hierarchy/Derived subclasses
| 452 / 71 | -> 82 | -> 83 | |
| -> 84 | -> 85 |
uspto searches
Patent Apps in 452/82Granted Patents in 452/82
Use the links above or do an advanced search in ppubs for:
(452/82.ccls. or 452/83.ccls. or 452/84.ccls. or 452/85.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.