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Watertight closure gasket insertion tool
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Patent number 8,950,755
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Issue date Feb 10, 2015
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The United States of America as represented by the Secretary of the Navy
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Robert C. Redfern
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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All purpose seal
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Patent number 7,451,714
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Issue date Nov 18, 2008
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The United States of America as represented by the Secretary of the Navy
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Robert Redfern
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Seal compression indication system
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Patent number 6,879,256
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Issue date Apr 12, 2005
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The United States of America as represented by the Secretary of the Navy
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Robert Charles Redfern
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Watertight door closure
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Patent number 6,799,396
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Issue date Oct 5, 2004
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The United States of America as represented by the Secretary of the Navy
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Robert C. Redfern
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT