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Sailboats and methods
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Patent number 6,189,471
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Issue date Feb 20, 2001
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David N. Mitchell
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Sailboats and methods
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Patent number 5,996,519
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Issue date Dec 7, 1999
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Cerebral Technologies, Inc.
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David N. Mitchell
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Sailboat and methods
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Patent number 5,988,086
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Issue date Nov 23, 1999
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Cerebral Technologies, Inc.
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David N. Mitchell
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT