Hierarchy/Derived subclasses
205 / 67 | -> 74 |
uspto searches
Patent Apps in 205/74Granted Patents in 205/74
Use the links above or do an advanced search in ppubs for:
(205/74.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.