Patents by Inventor Sheila S. Crowson

Sheila S. Crowson 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: D331419
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: December 1, 1992
    Assignee: Mega Games, Inc.
    Inventors: Daniel H. L. Chang, Sheila S. Crowson, John B. Williamson