USPC Class Details

Description: 137 fluid handling / 137 fluid handling/(87.01) self-proportioning or correlating systems (109) self-controlled branched flow systems (115.01) bypass or relief controlled by main line fluid condition (115.13) pressure responsive (115.26) sensor rigid with valve (115.27) flexible sensor

Hierarchy/Derived subclasses

137 / 87.01

-> 109

-> 115.01

-> 115.13

-> 115.26

-> 115.27

uspto searches

Patent Apps in 137/115.27

Granted Patents in 137/115.27

Use the links above or do an advanced search in ppubs for:
(137/115.27.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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