Hierarchy/Derived subclasses
| 312 / 294 | -> 330.1 | -> 334.1 | -> 334.27 | -> 334.28 |
uspto searches
Patent Apps in 312/334.28Granted Patents in 312/334.28
Use the links above or do an advanced search in ppubs for:
(312/334.28.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.