Patents by Inventor Larry R. Duke

Larry R. Duke 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).

  • Battlefield flask
    Patent number: 7121431
    Abstract: A retainable reniform-shaped flask for dispensing potable liquids and more particularly to a housing comprising an outer rigid case with a pre-filled inner disposable bag having a spout for dispensing the liquids.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: October 17, 2006
    Inventor: Larry R. Duke