Patents by Inventor Stephen P. Zwolenik

Stephen P. Zwolenik 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).

  • Sweater shelving unit
    Patent number: D400740
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: November 10, 1998
    Inventor: Stephen P. Zwolenik
  • Sweater shelving unit
    Patent number: D401442
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: November 24, 1998
    Inventor: Stephen P. Zwolenik