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Decorative window sash frame assembly
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Patent number 4,074,490
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Issue date Feb 21, 1978
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Yoshida Kogyo K.K.
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Mitsuo Nagase
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Exterior window unit having frame header
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Patent number 4,055,916
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Issue date Nov 1, 1977
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Yoshida Kogyo Kabushiki Kaisha
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Yukio Yamamoto
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Jointing device
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Patent number 4,013,371
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Issue date Mar 22, 1977
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Yoshida Kogyo Kabushiki Kaisha
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Mitsuo Nagase
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Louver assembly
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Patent number 3,991,533
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Issue date Nov 16, 1976
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Yoshida Kogyo Kabushiki Kaisha
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Mitsuo Nagase
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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