US PATENT SUBCLASS 340 / 663
.~.~.~.~ Undervoltage

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

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
657  DF  .~.~ Electrical characteristic {4}
660  DF  .~.~.~ Voltage {3}
663.~.~.~.~ Undervoltage

DEFINITION

Classification: 340/663

Undervoltage:

(under subclass 660) Subject matter where the voltage falls below a specified level.