Hierarchy/Derived subclasses
194 / 215 | -> 219 | -> 220 | -> 221 |
-> 222 | |||
-> 223 |
uspto searches
Patent Apps in 194/219Granted Patents in 194/219
Use the links above or do an advanced search in ppubs for:
(194/219.ccls. or 194/220.ccls. or 194/221.ccls. or 194/222.ccls. or 194/223.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.