US PATENT SUBCLASS 166 / 250.04
.~.~ Plug indicating or releasing

Current as of: June, 1999
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166 /   HD   WELLS

244.1  DF  PROCESSES {39}
250.01  DF  .~ With indicating, testing, measuring or locating {21}
250.04.~.~ Plug indicating or releasing

DEFINITION

Classification: 166/250.04

Plug indicating or releasing:

(under subclass 250.01) Indicating including the step(s) of monitoring the position or disengagement of a flow stopping device.