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Roller blind system
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Patent number 5,655,587
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Issue date Aug 12, 1997
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Franz Kraler
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Roller blind system
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Patent number 5,609,196
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Issue date Mar 11, 1997
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Franz Kraler
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Roll down shutter
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Patent number 5,443,107
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Issue date Aug 22, 1995
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Franz Kraler
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS