Patents by Inventor Lars L. Sjostedt

Lars L. Sjostedt 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).

  • Loose-leaf binder utilizing stiff covers
    Patent number: 4202642
    Abstract: The disclosed apparatus is capable of uniting a cover with a sheaf of pages having through holes at purely optional locations. A flexible stem binds the pages and has its ends engaged by separate runners positioned adjacent the sheaf. The cover is connected to the runners at a position opposite the sheath so that the stem ends need not pass through the cover. The elastic flexibility of the stem permits the cover to open without bending.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: May 13, 1980
    Inventor: Lars L. Sjostedt