US PATENT SUBCLASS 340 / 451
.~.~ Fluid pressure

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

425.5  DF  LAND VEHICLE ALARMS OR INDICATORS {11}
438  DF  .~ Internal alarm or indicator responsive to a condition of the vehicle {13}
451.~.~ Fluid pressure {1}
452  DF  .~.~.~> Of brake fluid

DEFINITION

Classification: 340/451

Fluid pressure:

(under subclass 438) Subject matter wherein the specific condition is the pressure in a contained fluid.