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Water survival mask
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Patent number 10,420,966
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Issue date Sep 24, 2019
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Charlie Strand
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A62 - LIFE-SAVING FIRE-FIGHTING
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Diver's backpack
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Patent number 6,295,984
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Issue date Oct 2, 2001
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Payal Patel
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Snorkel
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Patent number 4,896,664
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Issue date Jan 30, 1990
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Junkosha Co., Ltd.
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Chiharu Harayama
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3369343
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Patent number 3,369,343
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Issue date Feb 20, 1968
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3333583
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Patent number 3,333,583
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Issue date Aug 1, 1967
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3325330
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Patent number 3,325,330
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Issue date Jun 13, 1967
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3318306
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Patent number 3,318,306
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Issue date May 9, 1967
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3276846
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Patent number 3,276,846
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Issue date Oct 4, 1966
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3228394
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Patent number 3,228,394
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Issue date Jan 11, 1966
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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916886
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Patent number 916,886
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Issue date Mar 30, 1909
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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441119
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Patent number 441,119
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Issue date Nov 18, 1890
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT