Hierarchy/Derived subclasses
70 / 57 | -> 174 | -> 225 | -> 226 | -> 227 |
-> 228 |
uspto searches
Patent Apps in 70/226Granted Patents in 70/226
Use the links above or do an advanced search in ppubs for:
(70/226.ccls. or 70/227.ccls. or 70/228.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.