Patents by Inventor John Matviak

John Matviak 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).

  • Device for reducing predictability in card games
    Patent number: 4512580
    Abstract: A device for maximizing the random distribution of playing cards comprises a continuous, advancable track mounted on a base and supporting the cards in a vertical orientation and at least one access station which permits either or both of removal of a portion of the cards or insertion of cards onto the track.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: April 23, 1985
    Inventor: John Matviak