Patents by Inventor Harvey L. Hewin

Harvey L. Hewin 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).

  • Mixing tool for liquids
    Patent number: D366596
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: January 30, 1996
    Inventor: Harvey L. Hewin