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Vapor generator
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Patent number 4,499,859
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Issue date Feb 19, 1985
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Hitachi, Ltd.
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Akira Nishiguchi
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Cryogenic heater
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Patent number 4,377,133
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Issue date Mar 22, 1983
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Ajit D. Mankekar
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
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Water and room heater
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Patent number 3,934,554
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Issue date Jan 27, 1976
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Philip E. Carlson
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F22 - STEAM GENERATION
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3685496
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Patent number 3,685,496
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Issue date Aug 22, 1972
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F22 - STEAM GENERATION
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2937626
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Patent number 2,937,626
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Issue date May 24, 1960
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F24 - HEATING RANGES VENTILATING
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2604080
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Patent number 2,604,080
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Issue date Jul 22, 1952
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F22 - STEAM GENERATION
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2069956
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Patent number 2,069,956
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Issue date Feb 9, 1937
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F22 - STEAM GENERATION
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365670
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Patent number 365,670
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Issue date Jun 28, 1887
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F24 - HEATING RANGES VENTILATING
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355807
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Patent number 355,807
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Issue date Jan 11, 1887
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F24 - HEATING RANGES VENTILATING
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355808
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Patent number 355,808
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Issue date Jan 11, 1887
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F24 - HEATING RANGES VENTILATING
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345879
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Patent number 345,879
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Issue date Jul 20, 1886
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F24 - HEATING RANGES VENTILATING
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342747
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Patent number 342,747
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Issue date May 25, 1886
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F24 - HEATING RANGES VENTILATING
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300207
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Patent number 300,207
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Issue date Jun 10, 1884
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F24 - HEATING RANGES VENTILATING
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289796
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Patent number 289,796
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Issue date Dec 11, 1883
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F24 - HEATING RANGES VENTILATING
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41323
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Patent number 41,323
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Issue date Jan 19, 1864
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F24 - HEATING RANGES VENTILATING