Patents by Inventor Raymond H. Pierce

Raymond H. Pierce 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: D307566
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: May 1, 1990
    Assignee: Tromar Corporation Ltd.
    Inventor: Raymond H. Pierce
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    Patent number: D308839
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: June 26, 1990
    Assignee: Tromar Corporation
    Inventor: Raymond H. Pierce
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    Patent number: D309279
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: July 17, 1990
    Assignee: Tromar Corporation Ltd.
    Inventor: Raymond H. Pierce