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Sash assembly with built-in blind
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Patent number 4,884,613
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Issue date Dec 5, 1989
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Yoshida Kogyo K. K.
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Akihiro Komori
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Screen unit with built-in blind
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Patent number 4,877,076
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Issue date Oct 31, 1989
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Yoshida Kogyo K. K.
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Akihiro Komori
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS