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Controlled dispensing device
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Patent number 7,219,818
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Issue date May 22, 2007
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Shun-I Pan
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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Enclosed opening means
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Patent number 7,198,421
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Issue date Apr 3, 2007
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Tawei Tsao
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Sliding piston opening means
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Patent number 7,182,539
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Issue date Feb 27, 2007
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Shun-I Pan
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL