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Pipeline pig bypassing assembly
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Patent number 4,736,482
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Issue date Apr 12, 1988
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Taylor Forge Engineered Systems, Inc.
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Robert J. Lankston
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Closure assembly
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Patent number 4,444,331
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Issue date Apr 24, 1984
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Gulf & Western Manufacturing Co.
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Robert J. Lankston
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Closure arrangement for pressure device
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Patent number 4,288,001
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Issue date Sep 8, 1981
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Gulf & Western Manufacturing Company
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Robert J. Lankston
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL