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Inverted bellows valve
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Patent number 4,687,017
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Issue date Aug 18, 1987
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Nupro Company
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Oliver L. Danko
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve
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Patent number 4,684,106
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Issue date Aug 4, 1987
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Nupro Company
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Terrence J. Kolenc
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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High pressure inverted bellows valve
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Patent number 4,634,099
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Issue date Jan 6, 1987
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Nupro Company
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Oliver L. Danko
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve
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Patent number 4,606,374
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Issue date Aug 19, 1986
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Nupro Company
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Terrence J. Kolenc
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Pressure relief valve
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Patent number 4,530,373
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Issue date Jul 23, 1985
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Nupro Company
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Carl R. Bork
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...