Hierarchy/Derived subclasses
| 249 / 117 | -> 155 | -> 156 |
| -> 157 | ||
| -> 158 | ||
| -> 159 |
uspto searches
Patent Apps in 249/155Granted Patents in 249/155
Use the links above or do an advanced search in ppubs for:
(249/155.ccls. or 249/156.ccls. or 249/157.ccls. or 249/158.ccls. or 249/159.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.