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Valve closure
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Patent number 4,723,566
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Issue date Feb 9, 1988
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Koninklijke Emballage Industrie Van Leer B.V.
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John D. Lewins
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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Valve unit for liquid container
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Patent number 4,529,105
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Issue date Jul 16, 1985
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Koninklijke Emballage Industrie Van Leer B.V.
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John D. Lewins
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...