Hierarchy/Derived subclasses
719 / ipc | -> 321 | -> 324 | -> vxd |
uspto searches
Patent Apps in 719/324Granted Patents in 719/324
Use the links above or do an advanced search in ppubs for:
(719/324.ccls. or 719/vxd.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.