Hierarchy/Derived subclasses
| 303 / 121 | -> 127 | -> 128 | -> 129 | -> 130 |
| -> 131 | ||||
| -> 132 | ||||
| -> 133 | ||||
| -> 134 | ||||
| -> 135 | ||||
| -> 136 |
uspto searches
Patent Apps in 303/127Granted Patents in 303/127
Use the links above or do an advanced search in ppubs for:
(303/127.ccls. or 303/128.ccls. or 303/129.ccls. or 303/130.ccls. or 303/131.ccls. or 303/132.ccls. or 303/133.ccls. or 303/134.ccls. or 303/135.ccls. or 303/136.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.