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Display and control device for homes, apartments, and other buildings

  • US 5,521,578 A
  • Filed: 05/31/1994
  • Issued: 05/28/1996
  • Est. Priority Date: 01/31/1991
  • Status: Expired due to Fees
First Claim
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1. In combination, a doorbell control assembly adapted to be connected to existing wiring of a doorbell unit, and a display device for displaying alphanumeric characters and powered through said doorbell control assembly, said display device comprising:

  • a housing module including a cover having a window therein;

    a thin, substantially flat carrier element mounted within said housing module and displaying alphanumeric characters through said window in said cover, at least part of said carrier element being at least partially light transmissive;

    at least one lamp disposed within said housing module behind said carrier element to provide illumination thereof, andreflector means, comprising a thin, substantially flat reflector element disposed within said housing module in back of said at least one lamp, for directing light from said at least one lamp so as to provide illumination of said carrier element, said reflector element including a plurality of formed cavities therein and at least some of said alphanumeric characters of said carrier element are individually disposed in registration with said cavities, and said cavities of said reflector element including stepped reflective side walls.

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