Hierarchy/Derived subclasses
194 / 247 | -> 249 | -> 253 | -> 254 | -> 255 |
-> 256 | ||||
-> 257 |
uspto searches
Patent Apps in 194/253Granted Patents in 194/253
Use the links above or do an advanced search in ppubs for:
(194/253.ccls. or 194/254.ccls. or 194/255.ccls. or 194/256.ccls. or 194/257.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.