Hierarchy/Derived subclasses
| 307 / 149 | -> 154 | -> 155 | -> 156 |
| -> 157 |
uspto searches
Patent Apps in 307/154Granted Patents in 307/154
Use the links above or do an advanced search in ppubs for:
(307/154.ccls. or 307/155.ccls. or 307/156.ccls. or 307/157.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.