Hierarchy/Derived subclasses
| 74 / 5r | -> 5.34 | -> 5.37 |
uspto searches
Patent Apps in 74/5.34Granted Patents in 74/5.34
Use the links above or do an advanced search in ppubs for:
(74/5.34.ccls. or 74/5.37.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.