Patents by Inventor Gibert H. Krahn

Gibert H. Krahn 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).

  • Rotary lock
    Patent number: D318007
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: July 9, 1991
    Assignee: A.L. Hansen Manufacturing Company
    Inventors: Randall C. Hansen, Gibert H. Krahn