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Heat transfer fin structure
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Patent number 4,143,710
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Issue date Mar 13, 1979
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Fedders Corporation
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Gerald E. La Porte
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F24 - HEATING RANGES VENTILATING
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Solar heat collector
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Patent number 4,138,997
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Issue date Feb 13, 1979
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Fedders Corporation
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Gerald E. LaPorte
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F24 - HEATING RANGES VENTILATING
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Flapper valve for a rotary compressor
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Patent number 3,998,243
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Issue date Dec 21, 1976
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Fedders Corporation
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Charles L. Osterkorn
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Ultrasonic soldering process
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Patent number 3,945,554
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Issue date Mar 23, 1976
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Fedders Corporation
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Charles Louis Osterkorn
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR