Hierarchy/Derived subclasses
719 / ipc | -> 320 |
uspto searches
Patent Apps in 719/320Granted Patents in 719/320
Use the links above or do an advanced search in ppubs for:
(719/320.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.