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Radio telephone operating technique

  • US 5,594,778 A
  • Filed: 10/18/1995
  • Issued: 01/14/1997
  • Est. Priority Date: 02/04/1991
  • Status: Expired due to Term
First Claim
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1. A method of operating a radiotelephone, the radiotelephone including a memory, a display and a keypad with at least a first single-throw function key, a second single-throw function key, and a plurality of data keys, the method comprising the steps of:

  • creating a first function key signal solely responsive to the first single-throw function key to turn on the radiotelephone;

    selecting a phone number using the plurality of data keys;

    creating a second function key signal solely responsive to said first single-throw function key activating the radiotelephone to call said phone number;

    creating a third function key signal solely responsive to the second single-throw function key disconnecting the radiotelephone from said call;

    creating a fourth function key signal solely responsive to said second single-throw function key turning off the radiotelephone; and

    wherein said first single-throw function key does not revert back to creating said first function key signal unless said fourth function key signal has been created.

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