Hierarchy/Derived subclasses
242 / 370 | -> 223 | -> 249 | -> 264 | -> 269 | -> 270 | -> 271 |
uspto searches
Patent Apps in 242/269Granted Patents in 242/269
Use the links above or do an advanced search in ppubs for:
(242/269.ccls. or 242/270.ccls. or 242/271.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.