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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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-
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Adjustable air valve
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Patent number 4,828,169
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Issue date May 9, 1989
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Daniel J. Smith
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F24 - HEATING RANGES VENTILATING
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Radiator vent valve
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Patent number 4,765,537
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Issue date Aug 23, 1988
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ITT Corporation
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John R. Donovan
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F24 - HEATING RANGES VENTILATING
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3493175
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Patent number 3,493,175
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Issue date Feb 3, 1970
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F24 - HEATING RANGES VENTILATING
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3425623
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Patent number 3,425,623
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Issue date Feb 4, 1969
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F24 - HEATING RANGES VENTILATING
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3366061
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Patent number 3,366,061
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Issue date Jan 30, 1968
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F24 - HEATING RANGES VENTILATING
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3342411
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Patent number 3,342,411
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Issue date Sep 19, 1967
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F24 - HEATING RANGES VENTILATING
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3196898
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Patent number 3,196,898
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Issue date Jul 27, 1965
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F24 - HEATING RANGES VENTILATING
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3186641
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Patent number 3,186,641
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Issue date Jun 1, 1965
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F24 - HEATING RANGES VENTILATING
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3181794
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Patent number 3,181,794
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Issue date May 4, 1965
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F24 - HEATING RANGES VENTILATING
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3147920
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Patent number 3,147,920
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Issue date Sep 8, 1964
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F24 - HEATING RANGES VENTILATING
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3115303
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Patent number 3,115,303
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Issue date Dec 24, 1963
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F24 - HEATING RANGES VENTILATING
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3092324
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Patent number 3,092,324
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Issue date Jun 4, 1963
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F24 - HEATING RANGES VENTILATING
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3083703
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Patent number 3,083,703
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Issue date Apr 2, 1963
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F24 - HEATING RANGES VENTILATING
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3074479
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Patent number 3,074,479
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Issue date Jan 22, 1963
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F24 - HEATING RANGES VENTILATING
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3064901
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Patent number 3,064,901
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Issue date Nov 20, 1962
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F24 - HEATING RANGES VENTILATING
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3022860
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Patent number 3,022,860
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Issue date Feb 27, 1962
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F24 - HEATING RANGES VENTILATING
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3002522
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Patent number 3,002,522
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Issue date Oct 3, 1961
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F24 - HEATING RANGES VENTILATING
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2997129
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Patent number 2,997,129
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Issue date Aug 22, 1961
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F24 - HEATING RANGES VENTILATING
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2989069
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Patent number 2,989,069
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Issue date Jun 20, 1961
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F24 - HEATING RANGES VENTILATING
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2909321
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Patent number 2,909,321
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Issue date Oct 20, 1959
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F24 - HEATING RANGES VENTILATING
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2909322
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Patent number 2,909,322
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Issue date Oct 20, 1959
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F24 - HEATING RANGES VENTILATING
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2898931
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Patent number 2,898,931
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Issue date Aug 11, 1959
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F24 - HEATING RANGES VENTILATING
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2845227
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Patent number 2,845,227
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Issue date Jul 29, 1958
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F24 - HEATING RANGES VENTILATING
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2820594
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Patent number 2,820,594
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Issue date Jan 21, 1958
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F24 - HEATING RANGES VENTILATING
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2789770
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Patent number 2,789,770
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Issue date Apr 23, 1957
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F24 - HEATING RANGES VENTILATING