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Sliding panel
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Patent number 8,297,334
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Issue date Oct 30, 2012
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Chen-Ho Chu
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Venetian blind
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Patent number 6,397,918
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Issue date Jun 4, 2002
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Chen-Ho Chu
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS