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Cordless cellular shade
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Patent number 6,047,759
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Issue date Apr 11, 2000
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Phillip A. Lysyj
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Cordless cellular shade
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Patent number 5,960,846
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Issue date Oct 5, 1999
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Phillip A. Lysyj
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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