USPC Class Details

Description: 137 fluid handling / 137 fluid handling/(87.01) self-proportioning or correlating systems (109) self-controlled branched flow systems (118.01) plural outflows (119.01) alternately or successively substituted outflow (119.08) pressure responsive

Hierarchy/Derived subclasses

137 / 87.01

-> 109

-> 118.01

-> 119.01

-> 119.08

-> 119.09

uspto searches

Patent Apps in 137/119.08

Granted Patents in 137/119.08

Use the links above or do an advanced search in ppubs for:
(137/119.08.ccls. or 137/119.09.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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