US PATENT SUBCLASS 348 / 546
.~.~.~ Countdown

Current as of: June, 1999
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500  DF  SYNCHRONIZATION {11}
536  DF  .~ Automatic phase or frequency control {4}
540  DF  .~.~ Horizontal sync component {3}
546.~.~.~ Countdown

DEFINITION

Classification: 348/546

Countdown:

(under subclass 540) Subject matter including a resetting divider for controlling the phase or time of the oscillating signal in response to the horizontal sync.