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Heater system
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Patent number 9,702,567
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Issue date Jul 11, 2017
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William D. Owen
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F24 - HEATING RANGES VENTILATING
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Combined power and heating station
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Patent number 9,222,360
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Issue date Dec 29, 2015
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Viking Heat Engines AS
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Trond Aas Bjerkan
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Fluid heating system
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Patent number 9,182,115
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Issue date Nov 10, 2015
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Kenneth A. Dongo
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F28 - HEAT EXCHANGE IN GENERAL
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Heating system
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Patent number 4,365,742
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Issue date Dec 28, 1982
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George R. Cogar
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F24 - HEATING RANGES VENTILATING
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Heating system
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Patent number 4,052,001
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Issue date Oct 4, 1977
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Interliz Anstalt
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Alfred Vogt
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F24 - HEATING RANGES VENTILATING
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2920608
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Patent number 2,920,608
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Issue date Jan 12, 1960
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F24 - HEATING RANGES VENTILATING
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2322675
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Patent number 2,322,675
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Issue date Jun 22, 1943
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F24 - HEATING RANGES VENTILATING
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2254054
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Patent number 2,254,054
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Issue date Aug 26, 1941
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F24 - HEATING RANGES VENTILATING
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2236624
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Patent number 2,236,624
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Issue date Apr 1, 1941
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F24 - HEATING RANGES VENTILATING
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2036602
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Patent number 2,036,602
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Issue date Apr 7, 1936
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F24 - HEATING RANGES VENTILATING
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1802970
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Patent number 1,802,970
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Issue date Apr 28, 1931
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F24 - HEATING RANGES VENTILATING
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1440810
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Patent number 1,440,810
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Issue date Jan 2, 1923
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F24 - HEATING RANGES VENTILATING