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Impact-impeding pane/frame structure
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Patent number 4,962,710
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Issue date Oct 16, 1990
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Schuco International GmbH & Co.
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Siegfried Habicht
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Impact-impeding pane/frame structure
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Patent number 4,879,957
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Issue date Nov 14, 1989
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Schuco International GmbH & Co.
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Siegfried Habicht
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS