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Heat exchanger
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Patent number 4,962,809
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Issue date Oct 16, 1990
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Rolls-Royce plc
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Bryan L. Belcher
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F28 - HEAT EXCHANGE IN GENERAL
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Heat exchanging system
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Patent number 4,582,129
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Issue date Apr 15, 1986
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Matsushita Electric Industrial Co., Ltd.
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Nobuyuki Yano
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F24 - HEATING RANGES VENTILATING
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Heat exchanger
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Patent number 4,376,459
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Issue date Mar 15, 1983
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Diesel Kiki Co., Ltd.
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Masaru Nagashima
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F24 - HEATING RANGES VENTILATING
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Heat recovery apparatus
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Patent number 4,040,477
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Issue date Aug 9, 1977
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Thayne K. Garberick
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F24 - HEATING RANGES VENTILATING
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3884295
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Patent number 3,884,295
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Issue date May 20, 1975
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F24 - HEATING RANGES VENTILATING
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3477501
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Patent number 3,477,501
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Issue date Nov 11, 1969
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F28 - HEAT EXCHANGE IN GENERAL
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3232340
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Patent number 3,232,340
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Issue date Feb 1, 1966
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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3161233
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Patent number 3,161,233
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Issue date Dec 15, 1964
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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2890866
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Patent number 2,890,866
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Issue date Jun 16, 1959
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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2847926
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Patent number 2,847,926
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Issue date Aug 19, 1958
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F24 - HEATING RANGES VENTILATING
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2731903
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Patent number 2,731,903
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Issue date Jan 24, 1956
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F24 - HEATING RANGES VENTILATING
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2731902
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Patent number 2,731,902
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Issue date Jan 24, 1956
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F24 - HEATING RANGES VENTILATING
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2656781
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Patent number 2,656,781
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Issue date Oct 27, 1953
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F24 - HEATING RANGES VENTILATING
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2651507
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Patent number 2,651,507
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Issue date Sep 8, 1953
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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2601971
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Patent number 2,601,971
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Issue date Jul 1, 1952
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G05 - CONTROLLING REGULATING
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2561625
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Patent number 2,561,625
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Issue date Jul 24, 1951
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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2539293
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Patent number 2,539,293
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Issue date Jan 23, 1951
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F24 - HEATING RANGES VENTILATING
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2507604
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Patent number 2,507,604
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Issue date May 16, 1950
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F28 - HEAT EXCHANGE IN GENERAL
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2274494
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Patent number 2,274,494
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Issue date Feb 24, 1942
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F24 - HEATING RANGES VENTILATING
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2261596
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Patent number 2,261,596
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Issue date Nov 4, 1941
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F24 - HEATING RANGES VENTILATING
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2236750
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Patent number 2,236,750
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Issue date Apr 1, 1941
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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2070223
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Patent number 2,070,223
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Issue date Feb 9, 1937
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F28 - HEAT EXCHANGE IN GENERAL
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2049720
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Patent number 2,049,720
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Issue date Aug 4, 1936
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F28 - HEAT EXCHANGE IN GENERAL
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2039254
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Patent number 2,039,254
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Issue date Apr 28, 1936
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F28 - HEAT EXCHANGE IN GENERAL