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High temperature safety relief system
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Patent number 4,870,989
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Issue date Oct 3, 1989
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Keystone International, Inc.
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Cleo M. Bickford
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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High temperature safety relief system
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Patent number 4,865,074
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Issue date Sep 12, 1989
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Keystone International Inc.
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Cleo M. Bickford
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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High temperature safety relief system
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Patent number 4,848,397
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Issue date Jul 18, 1989
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Keystone International, Inc.
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Cleo M. Bickford
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Dual active selector valve
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Patent number 4,821,772
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Issue date Apr 18, 1989
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Anderson-Greenwood & Co.
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William L. Anderson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...