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Timing system and device and method for making the same

  • US 7,463,558 B2
  • Filed: 07/30/2007
  • Issued: 12/09/2008
  • Est. Priority Date: 12/13/2002
  • Status: Expired due to Fees
First Claim
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1. A timing device comprising:

  • a. an electrochromic structure configured to generate a visual indication in a selected period of time; and

    b. a driver circuit configured to automatically actuate the electrochromic structure to generate the visual indication within the selected period of time, wherein the driver circuit comprises a timing circuit.

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