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Vehicle engine coolant condition indicator

  • US 3,302,171 A
  • Filed: 10/01/1964
  • Issued: 01/31/1967
  • Est. Priority Date: 10/01/1964
  • Status: Expired due to Term
First Claim
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1. AN INDICATING DEVICE COMPRISING:

  • AN ELECTRICAL POWER SOURCE;

    INDICATING MEANS, MEANS CONNECTING ONE SIDE OF SAID INDICATING MEANS TO ONE SIDE OF SAID POWER SOURCE;

    FIRST MEANS RESPONSIVE TO A FIRST TEMPERATURE RANGE TO ESTABLISH A CONDUCTIVE PATH BETWEEN THE OPPOSITE SIDE OF SAID ELECTRICAL POWER SOURCE AND THE INDICATING MEANS;

    SECOND MEANS RESPONSIVE TO A SECOND TEMPERATURE RANGE;

    AND THIRD MEANS RESPONSIVE TO A PRESSURE RANGE AND COOP-

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