Hierarchy/Derived subclasses
99 / 275 | -> 279 | -> 316 | -> 317 | -> 318 | -> 319 | -> 320 |
uspto searches
Patent Apps in 99/319Granted Patents in 99/319
Use the links above or do an advanced search in ppubs for:
(99/319.ccls. or 99/320.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.