Hierarchy/Derived subclasses
352 / 85 | -> 86 | ||
-> 87 | |||
-> 88 | -> 89 | ||
-> 90 | |||
-> 91r | -> 91c | -> 91s |
uspto searches
Patent Apps in 352/85Granted Patents in 352/85
Use the links above or do an advanced search in ppubs for:
(352/85.ccls. or 352/86.ccls. or 352/87.ccls. or 352/88.ccls. or 352/89.ccls. or 352/90.ccls. or 352/91r.ccls. or 352/91c.ccls. or 352/91s.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.