Hierarchy/Derived subclasses
| 68 / 3r | -> 147 | -> 171 | -> 172 | -> 173 | -> 174 |
uspto searches
Patent Apps in 68/174Granted Patents in 68/174
Use the links above or do an advanced search in ppubs for:
(68/174.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.