Hierarchy/Derived subclasses
| 434 / 219 | -> 227 | -> 228 | |
| -> 229 | |||
| -> 230 | |||
| -> 231 | -> 232 | ||
| -> 233 |
uspto searches
Patent Apps in 434/227Granted Patents in 434/227
Use the links above or do an advanced search in ppubs for:
(434/227.ccls. or 434/228.ccls. or 434/229.ccls. or 434/230.ccls. or 434/231.ccls. or 434/232.ccls. or 434/233.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.