US PATENT SUBCLASS 422 / 82.13
.~.~ Measuring pressure

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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

50  DF  ANALYZER, STRUCTURED INDICATOR, OR MANIPULATIVE LABORATORY DEVICE {11}
68.1  DF  .~ Means for analyzing liquid or solid sample {11}
82.13.~.~ Measuring pressure

DEFINITION

Classification: 422/82.13

Measuring pressure:

(under subclass 68.1) Apparatus having means for measuring the pressure in the material to be analyzed; e.g., a manometer.