Hierarchy/Derived subclasses
454 / 237 | -> 238 | ||
-> 239 | |||
-> 240 | |||
-> 241 | -> 242 | ||
-> 243 | -> 244 | ||
-> 245 | -> 246 | ||
-> 247 | |||
-> 248 | |||
-> 249 | |||
-> 250 | |||
-> 251 | -> 252 | ||
-> 253 |
uspto searches
Patent Apps in 454/237Granted Patents in 454/237
Use the links above or do an advanced search in ppubs for:
(454/237.ccls. or 454/238.ccls. or 454/239.ccls. or 454/240.ccls. or 454/241.ccls. or 454/242.ccls. or 454/243.ccls. or 454/244.ccls. or 454/245.ccls. or 454/246.ccls. or 454/247.ccls. or 454/248.ccls. or 454/249.ccls. or 454/250.ccls. or 454/251.ccls. or 454/252.ccls. or 454/253.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.