Patents by Inventor Nancy L. Bierk

Nancy L. Bierk 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).

  • Patent number: 4864736
    Abstract: A thong sandal having a sole fastened to the foot of a wearer by means of an instep strap and a toe tab connected to the sole and latched in the instep strap. The sole and instep strap are made from a flat sheet of material which is flexible and provides a comfortable support when walking of a size and shape to fit under the wearer's foot. The instep strap is partially cut away from the sole around the hee but remains attached to the sole on opposite sides of the instep. It is adapted to fold upward and forward and to latch on the toe tab. The toe tab is formed of a durable material which does not break during normal wear and has a protuberance at its free end distal its attachment to the sole for use as a display surface or it latches to the sole at the toe end such that the sandle folds substantially flat or both. The display surface can be customized to the customer's specifications and the protuberance is advantangeously attached to the stem of the toe tab on what is otherwise a stock sandal.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: September 12, 1989
    Assignee: Ad Impressions, Inc.
    Inventor: Nancy L. Bierk