Hierarchy/Derived subclasses
| 200 / 33r | -> 35r | -> 38r | -> 38e |
uspto searches
Patent Apps in 200/38eGranted Patents in 200/38e
Use the links above or do an advanced search in ppubs for:
(200/38e.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.