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Valve system
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Patent number 5,794,647
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Issue date Aug 18, 1998
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BTR plc
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Martin William Denmark
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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Valve disc and drive shaft assembly
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Patent number 5,297,778
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Issue date Mar 29, 1994
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BTR plc
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Michael P. Morris
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve disc and drive shaft assembly
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Patent number 5,226,630
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Issue date Jul 13, 1993
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BTR plc
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Phillip J. Haseley
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...