Hierarchy/Derived subclasses
301 / 5.1 | -> 62 | -> 73 | -> 74 | -> 75 | |
-> 76 | -> 77 | ||||
-> 78 |
uspto searches
Patent Apps in 301/74Granted Patents in 301/74
Use the links above or do an advanced search in ppubs for:
(301/74.ccls. or 301/75.ccls. or 301/76.ccls. or 301/77.ccls. or 301/78.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.