Hierarchy/Derived subclasses
556 / 1 | -> 118 | -> 121 | -> 122 | -> 123 | -> 124 | -> 125 |
-> 126 | ||||||
-> 127 | ||||||
-> 128 | ||||||
-> 129 |
uspto searches
Patent Apps in 556/121Granted Patents in 556/121
Use the links above or do an advanced search in ppubs for:
(556/121.ccls. or 556/122.ccls. or 556/123.ccls. or 556/124.ccls. or 556/125.ccls. or 556/126.ccls. or 556/127.ccls. or 556/128.ccls. or 556/129.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.