Patents by Inventor Norman Robberstad

Norman Robberstad 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).

  • Handle
    Patent number: D489977
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: May 18, 2004
    Inventor: Norman Robberstad