Hierarchy/Derived subclasses
| D6 / 300 | -> 303 | -> 306 |
uspto searches
Patent Apps in D6/306Granted Patents in D6/306
Use the links above or do an advanced search in ppubs for:
(D6/306.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.