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Detachable connector
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Patent number 10,576,313
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Issue date Mar 3, 2020
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Shigematsu Works Co., Ltd.
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Nobuo Shigematsu
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A62 - LIFE-SAVING FIRE-FIGHTING
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Breathing apparatus
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Patent number 8,905,018
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Issue date Dec 9, 2014
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Shigematsu Works Co., Ltd.
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Kenichi Ono
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A62 - LIFE-SAVING FIRE-FIGHTING
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Breathing apparatus
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Patent number 8,671,943
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Issue date Mar 18, 2014
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Shigematsu Works Co., Ltd.
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Nobuo Shigematsu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Whole face covering mask
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Patent number D602154
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Issue date Oct 13, 2009
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Shigematsu Works Co., Ltd.
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Kenichi Ono
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D24 - Medical and laboratory equipment
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Powered respirator
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Patent number 7,464,705
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Issue date Dec 16, 2008
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Shigematsu Works Co., Ltd
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Naoto Tanizawa
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A62 - LIFE-SAVING FIRE-FIGHTING
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Mask
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Patent number 7,086,400
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Issue date Aug 8, 2006
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Shigematsu Works Co., Ltd.
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Nobuo Shigematsu
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A41 - WEARING APPAREL
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-
-
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Face shield assembly
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Patent number 4,748,695
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Issue date Jun 7, 1988
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Shigematsu Works Co., Ltd.
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Nobuo Shigematsu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Mask
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Patent number 4,501,272
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Issue date Feb 26, 1985
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Shigematsu Works Co., Ltd.
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Kaisaburo Shigematsu
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A41 - WEARING APPAREL