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Pressure responsive fractionation control
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Patent number 4,070,172
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Issue date Jan 24, 1978
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Phillips Petroleum Company
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Dexter E. Smith
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3156116
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Patent number 3,156,116
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Issue date Nov 10, 1964
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2386778
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Patent number 2,386,778
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Issue date Oct 16, 1945
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2364341
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Patent number 2,364,341
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Issue date Dec 5, 1944
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL