Patents by Inventor Ralph J. Kahn

Ralph J. Kahn 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).

  • Carrying case
    Patent number: 4239074
    Abstract: A carrying case, such as a briefcase, is disclosed with the side panels having U-shaped metal reinforcement. The metal reinforcement is encased in preformed sleeves made from lining material. The metal reinforcement is secured to the inner surface of the rectangular side panels by stitching.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: December 16, 1980
    Assignee: Schlesinger Brothers, Inc.
    Inventor: Ralph J. Kahn