Patents by Inventor Elmer J. Stumpf

Elmer J. Stumpf 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).

  • Adjustable coin display device
    Patent number: 3964187
    Abstract: An adjustable coin display device for receiving a coin wherein the structure grips the periphery of the coin and both sides of the coin may be viewed without an overlay to cause a visual obstruction of the coin faces. The device is adjustable to accommodate coins of varying diameter and includes a circular member designed to engage and grip the peripheral edge of a coin and eye means secured to the circular member for suspension of the entire device and coin.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: June 22, 1976
    Assignee: Beemak Plastics
    Inventor: Elmer J. Stumpf