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Heat transfer apparatus
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Patent number 5,339,654
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Issue date Aug 23, 1994
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Columbia Gas System Service Corporation
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F. Bert Cook
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F28 - HEAT EXCHANGE IN GENERAL
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Dual cooling/heating process and composition
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Patent number 4,742,687
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Issue date May 10, 1988
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Columbia Gas System Service Corporation
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Edward A. Reid
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Dual cooling/heating system energy recovery
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Patent number 4,691,532
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Issue date Sep 8, 1987
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Columbia Gas System Service Corp
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Edward A. Reid
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Absorption refrigeration and heat pump system
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Patent number 4,646,541
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Issue date Mar 3, 1987
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Columbia Gas System Service Corporation
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Edward A. Reid
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Heat shield
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Patent number 4,641,588
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Issue date Feb 10, 1987
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Columbia Gas System Service Corp.
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Edward M. Winter
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Backfill for magnesium anodes
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Patent number 4,623,435
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Issue date Nov 18, 1986
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Columbia Gas System Service Corporation
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John W. Nebgen
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Backfill for magnesium anodes
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Patent number 4,511,444
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Issue date Apr 16, 1985
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Columbia Gas Systems Service Corp.
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Alexander J. Dukat
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Solar energy for LNG vaporization
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Patent number 4,331,129
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Issue date May 25, 1982
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Columbia Gas System Service Corporation
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Charles C. Hong
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
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Gas-fired smooth top range
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Patent number 4,067,681
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Issue date Jan 10, 1978
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Columbia Gas System Service Corporation
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Edward A. Reid
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F24 - HEATING RANGES VENTILATING