US PATENT SUBCLASS 73 / 64.46
.~.~ Differential pressure

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

53.01  DF  LIQUID ANALYSIS OR ANALYSIS OF THE SUSPENSION OF SOLIDS IN A LIQUID {15}
64.45  DF  .~ Vapor pressure {1}
64.46.~.~ Differential pressure

DEFINITION

Classification: 73/64.46

Differential pressure:

(under subclass 64.45) Subject matter wherein the determination is made by utilizing plural pressures.