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Hair coloring calculator

  • US 4,434,467 A
  • Filed: 03/30/1981
  • Issued: 02/28/1984
  • Est. Priority Date: 04/12/1979
  • Status: Expired due to Fees
First Claim
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1. An apparatus for designating hair coloring products which will change an existing hair color to a new hair color, comprising:

  • keyboard means for entering designations representative of an existing and a new hair color;

    electronic means responsive to said keyboard means for converting said designations of the existing hair color into a first coded signal and for converting said designations of the new hair color into a second coded signal;

    storage means for storing a plurality of formulations of hair coloring products which will change any of a plurality of existing hair colors to any of a plurality of new hair colors;

    output means responsive to said first and second coded signals for obtaining the formulation from said storage means corresponding to said first and second coded signals, whereby the hair coloring products which will change the existing hair color to the new hair color will be provided.

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