Patents by Inventor Sumner Stone

Sumner Stone 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).

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    Patent number: D338906
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: August 31, 1993
    Inventor: Sumner Stone
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    Patent number: D338908
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: August 31, 1993
    Inventor: Sumner Stone