Hierarchy/Derived subclasses
303 / 121 | -> 127 | -> 128 | -> 129 | -> 130 |
-> 131 | ||||
-> 132 | ||||
-> 133 | ||||
-> 134 | ||||
-> 135 | ||||
-> 136 |
uspto searches
Patent Apps in 303/128Granted Patents in 303/128
Use the links above or do an advanced search in ppubs for:
(303/128.ccls. or 303/129.ccls. or 303/130.ccls. or 303/131.ccls. or 303/132.ccls. or 303/133.ccls. or 303/134.ccls. or 303/135.ccls. or 303/136.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.