Hierarchy/Derived subclasses
| 297 / 135 | -> 148 | -> 149 | -> 150 |
| -> 151 | |||
| -> 152 | |||
| -> 153 | |||
| -> 154 | -> 155 |
uspto searches
Patent Apps in 297/148Granted Patents in 297/148
Use the links above or do an advanced search in ppubs for:
(297/148.ccls. or 297/149.ccls. or 297/150.ccls. or 297/151.ccls. or 297/152.ccls. or 297/153.ccls. or 297/154.ccls. or 297/155.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.