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Centrifugal heat pump
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Patent number 4,793,154
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Issue date Dec 27, 1988
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Imperial Chemical Industries PLC
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William T. Cross
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Heat pumps
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Patent number 4,656,839
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Issue date Apr 14, 1987
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Imperial Chemical Industries PLC
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William T. Cross
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Centrifugal heat pump
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Patent number 4,553,408
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Issue date Nov 19, 1985
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Imperial Chemical Industries PLC
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William T. Cross
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Electrolytic process
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Patent number 4,256,551
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Issue date Mar 17, 1981
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Imperial Chemical Industries Limited
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Michael J. Cliff
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR