USPC Class Details

Description: 137 fluid handling / 137 fluid handling/(87.01) self-proportioning or correlating systems (98) self-proportioning flow systems (100) flow comparison or differential response (101) flow dividers (e.g., reversely acting controls)

Hierarchy/Derived subclasses

137 / 87.01-> 98-> 100-> 101

uspto searches

Patent Apps in 137/101

Granted Patents in 137/101

Use the links above or do an advanced search in ppubs for:
(137/101.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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