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Plug valve assembly
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Patent number 6,382,591
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Issue date May 7, 2002
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Flowserve Management Company
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David Lamar Bowers
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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High performance butterfly valve
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Patent number 6,029,949
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Issue date Feb 29, 2000
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Flowserve Corporation
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Robert Joseph Brown
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Adjustable ball valve
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Patent number 5,746,417
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Issue date May 5, 1998
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The Duriron Company, Inc.
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David Lamar Bowers
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Fire resistant seat for flow control valve
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Patent number 4,373,543
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Issue date Feb 15, 1983
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The Duriron Company, Inc.
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Robert J. Brown
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...