Hierarchy/Derived subclasses
| 312 / 351.1 | -> 351.3 | -> 351.4 | |
| -> 351.5 | -> 351.6 | ||
| -> 351.7 | |||
| -> 351.8 | |||
| -> 351.9 |
uspto searches
Patent Apps in 312/351.3Granted Patents in 312/351.3
Use the links above or do an advanced search in ppubs for:
(312/351.3.ccls. or 312/351.4.ccls. or 312/351.5.ccls. or 312/351.6.ccls. or 312/351.7.ccls. or 312/351.8.ccls. or 312/351.9.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.