Hierarchy/Derived subclasses
| D8 / 323 | -> 327 | -> 328 |
| -> 329 |
uspto searches
Patent Apps in D8/327Granted Patents in D8/327
Use the links above or do an advanced search in ppubs for:
(D8/327.ccls. or D8/328.ccls. or D8/329.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.