Hierarchy/Derived subclasses
| 188 / 2r | -> 33 | -> 38 | -> 38.5 |
| -> 39 | |||
| -> 40 |
uspto searches
Patent Apps in 188/38Granted Patents in 188/38
Use the links above or do an advanced search in ppubs for:
(188/38.ccls. or 188/38.5.ccls. or 188/39.ccls. or 188/40.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.