Hierarchy/Derived subclasses
| 292 / 2 | -> 194 | -> 219 | -> 220 | -> 228 |
uspto searches
Patent Apps in 292/228Granted Patents in 292/228
Use the links above or do an advanced search in ppubs for:
(292/228.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.