Hierarchy/Derived subclasses
44 / 300 | -> 301 | -> 302 |
uspto searches
Patent Apps in 44/301Granted Patents in 44/301
Use the links above or do an advanced search in ppubs for:
(44/301.ccls. or 44/302.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.