Patents by Inventor Richard S. Duggins

Richard S. Duggins 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).

  • Means and method for aging liquor
    Patent number: 4173656
    Abstract: Particulate matter containing particles of charred wood and particles of red layer wood is confined by filter paper in an apertured container having means for causing said container to float when placed in a liquor to be aged. For large commercial applications the container is suspended in the liquor which is periodically agitated.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: November 6, 1979
    Inventor: Richard S. Duggins