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Vacuum steam heating system
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Patent number 11,131,465
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Issue date Sep 28, 2021
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“Energy of Vacuum” Limited Liability Company
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Anton Viktorovich Khan
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F24 - HEATING RANGES VENTILATING
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Temperature control system
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Patent number 4,199,102
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Issue date Apr 22, 1980
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Dunham-Bush, Inc.
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Steven W. Paul
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F24 - HEATING RANGES VENTILATING
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Temperature control system
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Patent number 4,079,887
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Issue date Mar 21, 1978
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Dunham-Bush, Inc.
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Steven W. Paul
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F24 - HEATING RANGES VENTILATING
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3265304
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Patent number 3,265,304
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Issue date Aug 9, 1966
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F24 - HEATING RANGES VENTILATING
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3140824
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Patent number 3,140,824
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Issue date Jul 14, 1964
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F24 - HEATING RANGES VENTILATING
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3134542
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Patent number 3,134,542
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Issue date May 26, 1964
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F24 - HEATING RANGES VENTILATING
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3116876
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Patent number 3,116,876
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Issue date Jan 7, 1964
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F24 - HEATING RANGES VENTILATING
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3059854
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Patent number 3,059,854
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Issue date Oct 23, 1962
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F24 - HEATING RANGES VENTILATING
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2881792
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Patent number 2,881,792
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Issue date Apr 14, 1959
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F24 - HEATING RANGES VENTILATING
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2868461
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Patent number 2,868,461
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Issue date Jan 13, 1959
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F24 - HEATING RANGES VENTILATING
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2846985
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Patent number 2,846,985
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Issue date Aug 12, 1958
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F24 - HEATING RANGES VENTILATING
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2787285
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Patent number 2,787,285
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Issue date Apr 2, 1957
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F24 - HEATING RANGES VENTILATING
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2694527
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Patent number 2,694,527
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Issue date Nov 16, 1954
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F24 - HEATING RANGES VENTILATING
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2679640
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Patent number 2,679,640
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Issue date May 25, 1954
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F24 - HEATING RANGES VENTILATING
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2635815
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Patent number 2,635,815
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Issue date Apr 21, 1953
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F24 - HEATING RANGES VENTILATING
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2626756
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Patent number 2,626,756
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Issue date Jan 27, 1953
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F24 - HEATING RANGES VENTILATING
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2511022
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Patent number 2,511,022
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Issue date Jun 13, 1950
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F24 - HEATING RANGES VENTILATING