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Tandem fan for motor-vehicle radiators
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Patent number 5,826,549
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Issue date Oct 27, 1998
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Behr GmbH & Co.
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Hans Martin
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Heat exchange coil
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Patent number 4,981,171
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Issue date Jan 1, 1991
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Rite Coil, Inc.
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Robert T. Tippmann
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F28 - HEAT EXCHANGE IN GENERAL
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Induced flow heat exchanger
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Patent number 4,628,992
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Issue date Dec 16, 1986
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AT&T Information Systems
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Kevin J. Kennedy
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Ventilator apparatus
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Patent number 4,557,321
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Issue date Dec 10, 1985
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Gretsch-Unitas GmbH
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Julius M. von Resch
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F24 - HEATING RANGES VENTILATING
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Heat exchanger assembly
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Patent number 4,437,512
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Issue date Mar 20, 1984
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Harsco Corporation
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Robert F. DeVore
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F24 - HEATING RANGES VENTILATING
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Heat exchanger assembly
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Patent number 4,373,577
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Issue date Feb 15, 1983
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International Harvester Co.
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Russell G. McMillen
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F28 - HEAT EXCHANGE IN GENERAL
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Forced air unit
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Patent number 4,313,493
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Issue date Feb 2, 1982
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Tokyo Gas Co. Ltd.
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Akira Kawase
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F24 - HEATING RANGES VENTILATING
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Heat exchanger system
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Patent number 4,108,240
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Issue date Aug 22, 1978
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Aktiebolaget Atomenergi
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Peter Heinrich Erwin Margen
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3882932
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Patent number 3,882,932
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Issue date May 13, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3841398
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Patent number 3,841,398
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Issue date Oct 15, 1974
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F24 - HEATING RANGES VENTILATING
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3833057
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Patent number 3,833,057
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Issue date Sep 3, 1974
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F24 - HEATING RANGES VENTILATING
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3800866
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Patent number 3,800,866
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Issue date Apr 2, 1974
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F28 - HEAT EXCHANGE IN GENERAL