USPC Class Details

Description: 131 tobacco / 131 tobacco/(290) tobacco treatment (313) leaf stemming (315) and straightening, smoothing, flattening, or cleaning (316) booking

Hierarchy/Derived subclasses

131 / 290-> 313-> 315-> 316-> 317

uspto searches

Patent Apps in 131/316

Granted Patents in 131/316

Use the links above or do an advanced search in ppubs for:
(131/316.ccls. or 131/317.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.
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