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On-failure blind stopper system
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Patent number 7,591,298
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Issue date Sep 22, 2009
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Nichibei Co., Ltd.
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Ken-ichiro Egami
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Roll screen
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Patent number 6,378,594
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Issue date Apr 30, 2002
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Kabushiki Kaisha Nichibei
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Hiroomi Yamanaka
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS