Patents by Inventor Douglas A. Litt

Douglas A. Litt 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).

  • Cooler on wheels
    Patent number: D341060
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: November 9, 1993
    Inventors: Douglas A. Litt, Gregory F. Konves