Patents by Inventor Ralph E. Stewart

Ralph E. Stewart 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).

  • Card holder
    Patent number: 4468032
    Abstract: A card holder for holding cards, such as Bingo cards, having a projecting platform and having parallel, slotted members, positioned between two end members, and aligned to receive cards in vertical alignment, so that the playing numbers for each letter will be readily viewed.A modified form provides means for stacking the holders.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: August 28, 1984
    Inventor: Ralph E. Stewart