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Portable telephone

  • US 5,222,127 A
  • Filed: 03/10/1992
  • Issued: 06/22/1993
  • Est. Priority Date: 03/12/1991
  • Status: Expired due to Term
First Claim
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1. A portable telephone of a type to which a plurality of subscriber numbers are registered, comprising:

  • time measuring means for measuring a calling period of time from start of calling to end of calling; and

    memory means for saving and integrating results of measuring by the time measuring means for each subscriber number.

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