US PATENT SUBCLASS 73 / 861.76
.~.~.~.~ Spring biased

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

861  DF  VOLUME OR RATE OF FLOW {23}
861.71  DF  .~ By measuring thrust or drag forces {3}
861.74  DF  .~.~ On a vane {1}
861.75  DF  .~.~.~ With rotation about a fixed axis {1}
861.76.~.~.~.~ Spring biased

DEFINITION

Classification: 73/861.76

Spring biased:

(under subclass 861.75) Subject matter wherein the vane is biased against rotation by a spring.