Hierarchy/Derived subclasses
312 / 294 | -> 309 | -> 310 | -> 311 |
uspto searches
Patent Apps in 312/311Granted Patents in 312/311
Use the links above or do an advanced search in ppubs for:
(312/311.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.