Hierarchy/Derived subclasses
297 / 135 | -> 136 | -> 137 |
-> 138 |
uspto searches
Patent Apps in 297/136Granted Patents in 297/136
Use the links above or do an advanced search in ppubs for:
(297/136.ccls. or 297/137.ccls. or 297/138.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.