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Hatch clamping mechanism
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Patent number 10,526,049
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Issue date Jan 7, 2020
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United States of America, as represented by the Secretary of the Navy
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Justin R. Helton
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Damping apparatus for moonpool
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Patent number 8,955,596
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Issue date Feb 17, 2015
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Daewoo Shipbuilding & Marine Engineering Co., Ltd.
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Seong Deok Yun
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Collapsible hatch screen
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Patent number 5,003,905
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Issue date Apr 2, 1991
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Peter H. Raynor
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2159902
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Patent number 2,159,902
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Issue date May 23, 1939
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT