US PATENT SUBCLASS 73 / 1.57
.~ Fluid pressure

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

1.01  DF  INSTRUMENT PROVING OR CALIBRATING {13}
1.57.~ Fluid pressure {7}
1.58  DF  .~.~> Vacuum
1.59  DF  .~.~> With signal correction or processing {3}
1.65  DF  .~.~> Dead weight type
1.66  DF  .~.~> Varying {1}
1.68  DF  .~.~> With piston and cylinder
1.69  DF  .~.~> Using or containing liquid
1.71  DF  .~.~> Pressure activated device {1}

DEFINITION

Classification: 73/1.57

Fluid pressure:

(under subclass 1.01) Subject matter wherein the device being proven or calibrated either (a) measures fluid pressure or (b) is responsive to fluid pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

700+, for a fluid pressure gauge.