Hierarchy/Derived subclasses
| 66 / 169r | -> 170 | -> 171 | -> 174 |
uspto searches
Patent Apps in 66/174Granted Patents in 66/174
Use the links above or do an advanced search in ppubs for:
(66/174.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.