Hierarchy/Derived subclasses
505 / 800 | -> 801 | -> 805 | -> 806 | -> nb |
uspto searches
Patent Apps in 505/805Granted Patents in 505/805
Use the links above or do an advanced search in ppubs for:
(505/805.ccls. or 505/806.ccls. or 505/nb.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.