Hierarchy/Derived subclasses
540 / 1 | -> 200 | -> 203 | -> 205 | -> 214 | -> 215 | -> 216 | ||
-> 217 | ||||||||
-> 218 | ||||||||
-> 219 | ||||||||
-> 220 | ||||||||
-> 221 | ||||||||
-> 222 | -> 223 | |||||||
-> 224 | -> 225 | |||||||
-> 226 | -> 227 | |||||||
-> 228 | ||||||||
-> 229 | ||||||||
-> 230 | ||||||||
-> 300 | -> 301 |
uspto searches
Patent Apps in 540/205Granted Patents in 540/205
Use the links above or do an advanced search in ppubs for:
(540/205.ccls. or 540/214.ccls. or 540/215.ccls. or 540/216.ccls. or 540/217.ccls. or 540/218.ccls. or 540/219.ccls. or 540/220.ccls. or 540/221.ccls. or 540/222.ccls. or 540/223.ccls. or 540/224.ccls. or 540/225.ccls. or 540/226.ccls. or 540/227.ccls. or 540/228.ccls. or 540/229.ccls. or 540/230.ccls. or 540/300.ccls. or 540/301.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.