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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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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
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Gas-fired smooth top range
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Patent number 4,024,839
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Issue date May 24, 1977
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Columbia Gas System Service Corporation
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Edward A. Reid
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F24 - HEATING RANGES VENTILATING
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Gas-fired smooth top range
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Patent number 4,020,821
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Issue date May 3, 1977
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Columbia Gas System Service Corporation
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Edward A. Reid
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F24 - HEATING RANGES VENTILATING