Hierarchy/Derived subclasses
134 / 117 | -> 118 | |
-> 119 | -> 120 | |
-> 121 |
uspto searches
Patent Apps in 134/117Granted Patents in 134/117
Use the links above or do an advanced search in ppubs for:
(134/117.ccls. or 134/118.ccls. or 134/119.ccls. or 134/120.ccls. or 134/121.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.