Patents Assigned to Coin Cop Co.
  • Precision coin analyzer for numismatic application
    Patent number: 4128158
    Abstract: A precision analyzer for the testing of numismatic coins or other metallic articles is disclosed whereby the article to be tested is introduced into the field generated by the inductor of an oscillator and the change in amplitude of the oscillations resulting from the interaction of the field generated and the article to be tested is measured.
    Type: Grant
    Filed: July 22, 1976
    Date of Patent: December 5, 1978
    Assignee: Coin Cop Co.
    Inventor: Joseph L. Dautremont, Jr.