Hierarchy/Derived subclasses
540 / 1 | -> 121 | -> 122 | -> 123 | -> 124 | -> 125 | -> 126 |
-> 127 | ||||||
-> 128 | ||||||
-> 129 | ||||||
-> 130 | ||||||
-> 131 | -> 132 | |||||
-> 133 | -> 134 | |||||
-> 135 | ||||||
-> 136 | -> 137 | |||||
-> 138 | ||||||
-> 139 | -> 140 | -> 141 | ||||
-> 142 | -> 143 | |||||
-> 144 |
uspto searches
Patent Apps in 540/121Granted Patents in 540/121
Use the links above or do an advanced search in ppubs for:
(540/121.ccls. or 540/122.ccls. or 540/123.ccls. or 540/124.ccls. or 540/125.ccls. or 540/126.ccls. or 540/127.ccls. or 540/128.ccls. or 540/129.ccls. or 540/130.ccls. or 540/131.ccls. or 540/132.ccls. or 540/133.ccls. or 540/134.ccls. or 540/135.ccls. or 540/136.ccls. or 540/137.ccls. or 540/138.ccls. or 540/139.ccls. or 540/140.ccls. or 540/141.ccls. or 540/142.ccls. or 540/143.ccls. or 540/144.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.