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Multilayer glass structure
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Patent number 4,476,169
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Issue date Oct 9, 1984
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Takeda Chemical Industries, Ltd.
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Hiroshi Nishino
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Water glass composition
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Patent number 4,018,616
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Issue date Apr 19, 1977
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Mizusawa Kagaku Kogyo Kabushiki Kaisha
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Yujiro Sugahara
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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