Hierarchy/Derived subclasses
| 312 / 114 | -> 128 | -> 129 | -> 130 |
| -> 131 | |||
| -> 132 | -> 133 | ||
| -> 134 | |||
| -> 135 | |||
| -> 136 |
uspto searches
Patent Apps in 312/128Granted Patents in 312/128
Use the links above or do an advanced search in ppubs for:
(312/128.ccls. or 312/129.ccls. or 312/130.ccls. or 312/131.ccls. or 312/132.ccls. or 312/133.ccls. or 312/134.ccls. or 312/135.ccls. or 312/136.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.