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Glass panel
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Patent number 6,387,460
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Issue date May 14, 2002
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Nippon Sheet Glass Co., Ltd.
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Kyoichi Shukuri
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Double-glazing unit
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Patent number 6,210,763
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Issue date Apr 3, 2001
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Nippon Sheet Glass Co., Ltd.
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Hidemi Katoh
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS