Patents by Inventor Christopher Sprague

Christopher Sprague 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).

  • Illuminating earring
    Patent number: D326066
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: May 12, 1992
    Inventor: Christopher Sprague