Patents by Inventor Alfred R. Ostrowski

Alfred R. Ostrowski 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 or token operated amusement device
    Patent number: 4051939
    Abstract: The amusement device in which a plurality of symbol bearing wheels are rotated and then stopped, and wherein feelers are then permitted to move toward the axis of rotation to sense the combination of symbols appearing in a straight line. An electrical circuit is provided and operates in response to the position of the feelers and the number of coins or tokens used to determine whether a player has won, and, if so, to what extent that player has won.
    Type: Grant
    Filed: September 27, 1973
    Date of Patent: October 4, 1977
    Assignee: The Seeburg Corporation
    Inventors: Francis T. Murphy, Peter Sagan, Martin B. Rosenthal, Alfred R. Ostrowski