USPC Class Details

Description: 137 fluid handling / 137 fluid handling/(87.01) self-proportioning or correlating systems (109) self-controlled branched flow systems (111) plural inflows (112) alternate or successive inflows (113) control by depletion of source

Hierarchy/Derived subclasses

137 / 87.01

-> 109

-> 111

-> 112

-> 113

uspto searches

Patent Apps in 137/113

Granted Patents in 137/113

Use the links above or do an advanced search in ppubs for:
(137/113.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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