Patents by Inventor Peter J. Mandas

Peter J. Mandas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Coin accepting device
    Patent number: 3998309
    Abstract: A coin acceptor to prevent a cheating operation known as "stringing" wherein a coin is dropped into such an acceptor with a string attached and manipulated in a manner to make it appear that several coins have passed through the acceptor. This coin acceptor uses a series of coin position detectors with a counting circuit for sensing the sequence in which the coin passes the detectors.
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: December 21, 1976
    Assignee: Bally Manufacturing Corporation
    Inventors: Peter J. Mandas, Inge S. Telnaes