Hierarchy/Derived subclasses
312 / 294 | -> 298 | -> 301 | -> 302 | -> 303 |
uspto searches
Patent Apps in 312/302Granted Patents in 312/302
Use the links above or do an advanced search in ppubs for:
(312/302.ccls. or 312/303.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.