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Electronic access card with visual display

  • US 4,800,255 A
  • Filed: 08/22/1986
  • Issued: 01/24/1989
  • Est. Priority Date: 08/22/1986
  • Status: Expired due to Term
First Claim
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1. In an electronic access card for use with a lock device, a printed circuit board, a microprocessor carried by the printed circuit board, keyboard means connected to the microprocessor for inserting information into the micrprocessor, coupling means coupled to the microprocessor and adapted to receive information from the lock device to be conveyed to the microprocessor and adapted to transmit information from the microprocessor to the lock device and visual display means coupled to the microprocessor for visually displaying information which is carried in the microprocessor and supplied to or from the lock device.

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