US PATENT SUBCLASS 340 / 428
.~.~ Responsive to changes in voltage or current in a vehicle electrical system

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

425.5  DF  LAND VEHICLE ALARMS OR INDICATORS {11}
426  DF  .~ Of burglary or unauthorized use {4}
428.~.~ Responsive to changes in voltage or current in a vehicle electrical system

DEFINITION

Classification: 340/428

Responsive to change in voltage or current in a vehicle electrical system:

(under subclass 426) Subject matter including alarms which are actuated by direct sensing of changes in current or voltage within any existing electrical circuit (e.g., domelight or starter) of the vehicle.