Hierarchy/Derived subclasses
99 / 275 | -> 279 | -> 291 |
uspto searches
Patent Apps in 99/291Granted Patents in 99/291
Use the links above or do an advanced search in ppubs for:
(99/291.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.