Patents by Inventor Douglas M. Liss

Douglas M. Liss 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).

  • Liquid dispensing cap
    Patent number: D306258
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: February 27, 1990
    Assignee: Alko Ltd.
    Inventor: Douglas M. Liss
  • Bottle and dispensing cap
    Patent number: D307709
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: May 8, 1990
    Assignee: Alko, Ltd.
    Inventor: Douglas M. Liss