US PATENT SUBCLASS 166 / 66.6
.~ Valve

Current as of: June, 1999
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166 /   HD   WELLS

65.1  DF  WITH ELECTRICAL MEANS {4}
66.6.~ Valve {1}
66.7  DF  .~.~> Longitudinally movable operator

DEFINITION

Classification: 166/66.6

Valve:

(under subclass 65.1) Electrical means for a flow regulating means operable in the well to effect fluid movement.