US PATENT SUBCLASS 340 / 450.3
.~.~.~ Of lubricant (e.g., engine oil)

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  DF  .~.~ Fluid level {3}
450.3.~.~.~ Of lubricant (e.g., engine oil)

DEFINITION

Classification: 340/450.3

Of lubricant (e.g., engine oil):

(under subclass 450) Subject matter wherein the fluid is a lubricant.