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Net and line cutter
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Patent number 7,581,995
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Issue date Sep 1, 2009
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Donald T. Govan
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Rotary weed and line cutter
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Patent number 6,004,174
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Issue date Dec 21, 1999
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Donald T. Govan
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Line and weed cutter
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Patent number 5,017,167
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Issue date May 21, 1991
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Donald T. Govan
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Line cutter for propellers
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Patent number 4,943,249
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Issue date Jul 24, 1990
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Donald T. Govan
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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-
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Propeller protecting devices
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Patent number 4,507,091
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Issue date Mar 26, 1985
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Donald T. Govan
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Propellor protecting devices
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Patent number 4,447,215
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Issue date May 8, 1984
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Donald T. Govan
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT