Hierarchy/Derived subclasses
347 / 224 | -> 225 | -> 256 | -> 257 | |
-> 258 | -> 259 | |||
-> 260 | -> 261 |
uspto searches
Patent Apps in 347/256Granted Patents in 347/256
Use the links above or do an advanced search in ppubs for:
(347/256.ccls. or 347/257.ccls. or 347/258.ccls. or 347/259.ccls. or 347/260.ccls. or 347/261.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.