Hierarchy/Derived subclasses
91 / 218 | -> 247 | -> 248 | |||
-> 249 | -> 250 | -> 251 | |||
-> 252 | -> 253 | -> 254 | |||
-> 255 | |||||
-> 256 | -> 257 | ||||
-> 258 | |||||
-> 259 | |||||
-> 260 | -> 261 | ||||
-> 262 | |||||
-> 263 |
uspto searches
Patent Apps in 91/247Granted Patents in 91/247
Use the links above or do an advanced search in ppubs for:
(91/247.ccls. or 91/248.ccls. or 91/249.ccls. or 91/250.ccls. or 91/251.ccls. or 91/252.ccls. or 91/253.ccls. or 91/254.ccls. or 91/255.ccls. or 91/256.ccls. or 91/257.ccls. or 91/258.ccls. or 91/259.ccls. or 91/260.ccls. or 91/261.ccls. or 91/262.ccls. or 91/263.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.