Hierarchy/Derived subclasses
| 55 / 282 | -> 301 | -> 302 | -> 303 |
| -> 304 | -> 305 |
uspto searches
Patent Apps in 55/301Granted Patents in 55/301
Use the links above or do an advanced search in ppubs for:
(55/301.ccls. or 55/302.ccls. or 55/303.ccls. or 55/304.ccls. or 55/305.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.