Hierarchy/Derived subclasses
| 307 / 112 | -> 139 | -> 140 | |
| -> 141 | -> 141.4 | ||
| -> 141.8 | |||
| -> 142 | |||
| -> 143 | |||
| -> 144 |
uspto searches
Patent Apps in 307/139Granted Patents in 307/139
Use the links above or do an advanced search in ppubs for:
(307/139.ccls. or 307/140.ccls. or 307/141.ccls. or 307/141.4.ccls. or 307/141.8.ccls. or 307/142.ccls. or 307/143.ccls. or 307/144.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.