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Joint structure for multiple window
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Patent number 4,981,001
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Issue date Jan 1, 1991
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Yoshida Kogyo K. K.
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Kozo Furuminato
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Weathertight door assembly
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Patent number 4,370,827
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Issue date Feb 1, 1983
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Yoshida Kogyo K K
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Kozo Furuminato
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS