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Variable heat transfer device
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Patent number 4,212,346
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Issue date Jul 15, 1980
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Rockwell International Corporation
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Edward S. Boyd
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F28 - HEAT EXCHANGE IN GENERAL
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3229755
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Patent number 3,229,755
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Issue date Jan 18, 1966
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3204461
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Patent number 3,204,461
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Issue date Sep 7, 1965
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G05 - CONTROLLING REGULATING
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3156813
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Patent number 3,156,813
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Issue date Nov 10, 1964
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B60 - VEHICLES IN GENERAL
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3134890
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Patent number 3,134,890
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Issue date May 26, 1964
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F24 - HEATING RANGES VENTILATING
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2990716
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Patent number 2,990,716
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Issue date Jul 4, 1961
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H01 - BASIC ELECTRIC ELEMENTS
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2924975
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Patent number 2,924,975
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Issue date Feb 16, 1960
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G05 - CONTROLLING REGULATING
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2907210
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Patent number 2,907,210
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Issue date Oct 6, 1959
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G05 - CONTROLLING REGULATING
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2898434
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Patent number 2,898,434
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Issue date Aug 4, 1959
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G05 - CONTROLLING REGULATING
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2699489
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Patent number 2,699,489
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Issue date Jan 11, 1955
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G05 - CONTROLLING REGULATING
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2649845
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Patent number 2,649,845
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Issue date Aug 25, 1953
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F24 - HEATING RANGES VENTILATING
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2248304
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Patent number 2,248,304
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Issue date Jul 8, 1941
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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2221633
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Patent number 2,221,633
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Issue date Nov 12, 1940
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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2192960
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Patent number 2,192,960
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Issue date Mar 12, 1940
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G01 - MEASURING TESTING
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1996907
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Patent number 1,996,907
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Issue date Apr 9, 1935
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H01 - BASIC ELECTRIC ELEMENTS
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1941023
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Patent number 1,941,023
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Issue date Dec 26, 1933
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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1911066
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Patent number 1,911,066
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Issue date May 23, 1933
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G05 - CONTROLLING REGULATING
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1907869
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Patent number 1,907,869
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Issue date May 9, 1933
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H01 - BASIC ELECTRIC ELEMENTS
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1888098
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Patent number 1,888,098
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Issue date Nov 15, 1932
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1886042
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Patent number 1,886,042
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Issue date Nov 1, 1932
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1849906
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Patent number 1,849,906
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Issue date Mar 15, 1932
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G05 - CONTROLLING REGULATING
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1773817
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Patent number 1,773,817
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Issue date Aug 26, 1930
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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1731822
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Patent number 1,731,822
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Issue date Oct 15, 1929
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H01 - BASIC ELECTRIC ELEMENTS
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1724758
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Patent number 1,724,758
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Issue date Aug 13, 1929
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H01 - BASIC ELECTRIC ELEMENTS
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1711398
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Patent number 1,711,398
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Issue date Apr 30, 1929
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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1694171
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Patent number 1,694,171
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Issue date Dec 4, 1928
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES