Hierarchy/Derived subclasses
420 / 8 | -> 104 | -> 105 | -> 108 | -> 109 |
uspto searches
Patent Apps in 420/108Granted Patents in 420/108
Use the links above or do an advanced search in ppubs for:
(420/108.ccls. or 420/109.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.