Hierarchy/Derived subclasses
152 / 151 | -> 155 | -> 156 | |||
-> 157 | -> 158 | ||||
-> 159 | -> 160 | ||||
-> 161 | |||||
-> 162 | -> 163 | -> 164 | |||
-> 165 | -> 166 |
uspto searches
Patent Apps in 152/155Granted Patents in 152/155
Use the links above or do an advanced search in ppubs for:
(152/155.ccls. or 152/156.ccls. or 152/157.ccls. or 152/158.ccls. or 152/159.ccls. or 152/160.ccls. or 152/161.ccls. or 152/162.ccls. or 152/163.ccls. or 152/164.ccls. or 152/165.ccls. or 152/166.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.