US PATENT SUBCLASS 73 / 1.83
.~.~ Liquid

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

1.01  DF  INSTRUMENT PROVING OR CALIBRATING {13}
1.82  DF  .~ Apparatus for measuring by use of vibration or apparatus for measuring vibration (e.g., acoustic or ultrasonic) {4}
1.83.~.~ Liquid

DEFINITION

Classification: 73/1.83

Liquid:

(under subclass 1.82) Subject matter wherein either the (a) apparatus for proving or calibrating the device or (b) the device being proven or calibrated uses or includes a fluid exhibiting a readiness to flow, little or no tendency to disperse, or relatively high incompressibility.