Hierarchy/Derived subclasses
70 / 431 | -> 447 | -> 456r | -> 457 |
-> 458 | |||
-> 459 | |||
-> 456b |
uspto searches
Patent Apps in 70/456rGranted Patents in 70/456r
Use the links above or do an advanced search in ppubs for:
(70/456r.ccls. or 70/457.ccls. or 70/458.ccls. or 70/459.ccls. or 70/456b.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.