Patents by Inventor Leonard G. Schenk

Leonard G. Schenk 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).

  • Collapsible backrest, and methods of constructing and utilizing same
    Patent number: 5553921
    Abstract: A portable backrest for a picnic bench or bleacher. The backrest includes a back-engaging member having a substantially U-shaped frame; support posts for supporting the back-engaging member in any of a plurality of upright positions; and a clamping mechanism for urging the two prongs of the U-shaped frame against the bench or bleacher for securement thereto.
    Type: Grant
    Filed: June 19, 1995
    Date of Patent: September 10, 1996
    Inventor: Leonard G. Schenk