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Window blind
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Patent number 5,996,667
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Issue date Dec 7, 1999
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Fu-Mei Fun
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Lifting track of curtain
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Patent number 5,908,062
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Issue date Jun 1, 1999
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Fu-Mei Fun
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS