US PATENT SUBCLASS 73 / 861.49
.~.~ Pressure applied to liquid column or reservoir

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

861  DF  VOLUME OR RATE OF FLOW {23}
861.42  DF  .~ Using differential pressure {6}
861.49.~.~ Pressure applied to liquid column or reservoir {1}
861.51  DF  .~.~.~> With linearization

DEFINITION

Classification: 73/861.49

Pressure applied to liquid column or reservoir:

(under subclass 861.42) Subject matter wherein a liquid column or reservoir is subjected to the pressure to be measured and the resultant change in level is a measure of the flow rate.