Hierarchy/Derived subclasses
504 / 116.1 | -> 189 | -> 300 | -> 301 |
-> 302 | |||
-> 303 | |||
-> 304 | |||
-> 305 |
uspto searches
Patent Apps in 504/300Granted Patents in 504/300
Use the links above or do an advanced search in ppubs for:
(504/300.ccls. or 504/301.ccls. or 504/302.ccls. or 504/303.ccls. or 504/304.ccls. or 504/305.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.