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Heat exchanger
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Patent number 4,928,753
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Issue date May 29, 1990
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Babcock-Hitachi Kabushiki Kaisha
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Ikuo Kotaka
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F28 - HEAT EXCHANGE IN GENERAL
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Heat exchanger
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Patent number 4,616,697
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Issue date Oct 14, 1986
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Babcock-Hitachi Kabushiki Kaisha
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Ikuo Kotaka
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F28 - HEAT EXCHANGE IN GENERAL
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Heat exchanger
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Patent number 4,573,524
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Issue date Mar 4, 1986
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Babcock-Hitachi Kabushiki Kaisha
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Ikuo Kotaka
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F28 - HEAT EXCHANGE IN GENERAL
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3871444
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Patent number 3,871,444
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Issue date Mar 18, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3802496
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Patent number 3,802,496
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Issue date Apr 9, 1974
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F28 - HEAT EXCHANGE IN GENERAL
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3731734
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Patent number 3,731,734
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Issue date May 8, 1973
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F28 - HEAT EXCHANGE IN GENERAL
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3450198
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Patent number 3,450,198
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Issue date Jun 17, 1969
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F28 - HEAT EXCHANGE IN GENERAL
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3195622
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Patent number 3,195,622
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Issue date Jul 20, 1965
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F24 - HEATING RANGES VENTILATING
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3074478
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Patent number 3,074,478
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Issue date Jan 22, 1963
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F28 - HEAT EXCHANGE IN GENERAL
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1963442
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Patent number 1,963,442
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Issue date Jun 19, 1934
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F24 - HEATING RANGES VENTILATING
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1959362
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Patent number 1,959,362
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Issue date May 22, 1934
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F28 - HEAT EXCHANGE IN GENERAL
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1770254
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Patent number 1,770,254
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Issue date Jul 8, 1930
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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1600003
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Patent number 1,600,003
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Issue date Sep 14, 1926
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F28 - HEAT EXCHANGE IN GENERAL
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1563951
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Patent number 1,563,951
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Issue date Dec 1, 1925
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F28 - HEAT EXCHANGE IN GENERAL
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1550332
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Patent number 1,550,332
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Issue date Aug 18, 1925
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F28 - HEAT EXCHANGE IN GENERAL
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1502858
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Patent number 1,502,858
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Issue date Jul 29, 1924
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F26 - DRYING
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1479022
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Patent number 1,479,022
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Issue date Jan 1, 1924
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B60 - VEHICLES IN GENERAL
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1268074
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Patent number 1,268,074
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Issue date May 28, 1918
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F28 - HEAT EXCHANGE IN GENERAL
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1261183
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Patent number 1,261,183
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Issue date Apr 2, 1918
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F28 - HEAT EXCHANGE IN GENERAL
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511217
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Patent number 511,217
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Issue date Dec 19, 1893
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F28 - HEAT EXCHANGE IN GENERAL
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364908
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Patent number 364,908
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Issue date Jun 14, 1887
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F28 - HEAT EXCHANGE IN GENERAL
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305145
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Patent number 305,145
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Issue date Sep 16, 1884
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F28 - HEAT EXCHANGE IN GENERAL