Hierarchy/Derived subclasses
213 / 75r | -> 188 | -> 189 | -> 190 | -> 191 |
uspto searches
Patent Apps in 213/190Granted Patents in 213/190
Use the links above or do an advanced search in ppubs for:
(213/190.ccls. or 213/191.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.