US PATENT SUBCLASS 137 / 101.19
.~.~.~ With electrical controller

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

87.01  DF  SELF-PROPORTIONING OR CORRELATING SYSTEMS {8}
98  DF  .~ Self-proportioning flow systems {5}
100  DF  .~.~ Flow comparison or differential response {3}
101.19.~.~.~ With electrical controller

DEFINITION

Classification: 137/101.19

(under subclass 100) Subject matter comprising an electrical controller responsive to the sensing means.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

129+, for an electrical valve actuator.