Hierarchy/Derived subclasses
| D4 / 119 | -> 120 |
uspto searches
Patent Apps in D4/119Granted Patents in D4/119
Use the links above or do an advanced search in ppubs for:
(D4/119.ccls. or D4/120.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.