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Dome check valve
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Patent number 7,641,174
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Issue date Jan 5, 2010
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Halkey-Roberts Corporation
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Jon R. Enerson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dome check valve
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Patent number 7,296,782
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Issue date Nov 20, 2007
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Halkey-Roberts Corporation
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Jon R. Enerson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Disc check valve
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Patent number 6,988,510
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Issue date Jan 24, 2006
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Halkey-Roberts Corporation
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Jon R. Enerson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Modular pressure relief valve
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Patent number 6,923,202
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Issue date Aug 2, 2005
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Halkey-Roberts Corporation
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Jon R. Enerson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Male luer valve
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Patent number 6,609,696
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Issue date Aug 26, 2003
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Halkey-Roberts Corporation
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Jon R. Enerson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Male luer valve
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Patent number 6,543,745
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Issue date Apr 8, 2003
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Halkey-Roberts Corporation
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Jon R. Enerson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE