Hierarchy/Derived subclasses
| D4 / 127 | -> 128 |
uspto searches
Patent Apps in D4/128Granted Patents in D4/128
Use the links above or do an advanced search in ppubs for:
(D4/128.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.