Patents by Inventor Robert T. Donnell

Robert T. Donnell 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 holding device
    Patent number: 4971192
    Abstract: A coin holding device (10) for holding coins (100) having different diameters wherein the device includes a generally flexible base unit (11) having an open framework member (14) provided with a plurality of catch members (20) on one side and a plurality of prong units (13) on the other side; wherein, the framework member (14) is further provided with hinge elements (16) and spring members (17) so that the framework member (14) may be flexed outwardly to accomodate coins having different diameters.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: November 20, 1990
    Inventor: Robert T. Donnell