Patents by Inventor Clara W. Preston

Clara W. Preston 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: D316582
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: April 30, 1991
    Inventor: Clara W. Preston