US PATENT SUBCLASS 340 / 450
.~.~ Fluid level

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}
450.~.~ Fluid level {3}
450.1  DF  .~.~.~> Of hydraulic brake fluid
450.2  DF  .~.~.~> Of fuel
450.3  DF  .~.~.~> Of lubricant (e.g., engine oil)

DEFINITION

Classification: 340/450

Fluid level:

(under subclass 438) Subject matter wherein the specific condition is the depth of a fluid in a reservoir.