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Digital display advertising apparatus fixable to a printed directory

  • US 8,191,293 B2
  • Filed: 09/23/2009
  • Issued: 06/05/2012
  • Est. Priority Date: 09/23/2009
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a digital display configured to display an advertisement heading;

    a memory configured to store a set of advertisement headings; and

    a set of buttons configured to select advertisement heading being displayed;

    wherein the apparatus is affixed to an exterior of a printed directory, the apparatus being powered by solar generated energy.

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