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Motorized surfboard device
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Patent number 6,409,560
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Issue date Jun 25, 2002
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Shawn M. Austin
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Hydrogen hydride keel
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Issue date Aug 29, 1995
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David D. Rendina
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
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Fast self righting catamaran
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Patent number 4,610,212
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Issue date Sep 9, 1986
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Enrique G. Petrovich
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Patent number 3,619,632
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Issue date Nov 9, 1971
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3536025
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3405677
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3238911
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Patent number 3,238,911
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT