Patents by Inventor Joel B. Thorkildson

Joel B. Thorkildson 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).

  • Extendable shelf
    Patent number: 4155312
    Abstract: A two piece, lengthwise telescopically adjustable, shelf adapted to be mounted between vertical structural members or studs in a building. The lengthwise adjustability permits use of the shelf arrangement in spite of wide variations in the center-to-center spacing between the structural members.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: May 22, 1979
    Inventor: Joel B. Thorkildson