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Sign board lighting control system

  • US 5,254,908 A
  • Filed: 04/08/1992
  • Issued: 10/19/1993
  • Est. Priority Date: 04/08/1992
  • Status: Expired due to Term
First Claim
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1. A system for controlling the illumination of each one of a plurality of sign boards in accordance with predetermined lighting protocols, assigned to each sign board, each protocol requiring predetermined on and off times, comprising:

  • transmission means for transmitting at least one reference signal;

    a lighting control unit associated with each, sign board, each said lighting control unit including receiver means for receiving each said transmitted reference signal, timing means responsive to each said received reference signal for initiating a predetermined timing period and sign lighting circuit means responsive to said timing means for controlling the application of operating current to the illuminating means of each said sign board following said timing period, whereby each said sign board is illuminated in accordance with its respective lighting protocol.

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