US PATENT SUBCLASS 73 / 23.28
.~.~ For density or specific gravity

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

23.2  DF  GAS ANALYSIS {15}
23.21  DF  .~ With compensation detail (for error or drift correction, etc.) {2}
23.28.~.~ For density or specific gravity {1}
23.29  DF  .~.~.~> Pressure

DEFINITION

Classification: 73/23.28

For density or specific gravity:

(under subclass 23.21) Subject matter wherein the condition being corrected or adjusted affects the determination of the mass per unit volume of the gas or the ratio of the density of the gas to the density of some substance taken as a standard when both densities are obtained by weighing in air.