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Heat exchanger
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Patent number 7,624,788
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Issue date Dec 1, 2009
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State of Oregon Acting By and Through the State Board of Higher Education On...
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George Zindel Brown
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F28 - HEAT EXCHANGE IN GENERAL
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Radiant heating panel
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Patent number 5,862,854
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Issue date Jan 26, 1999
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RHP Systems, Inc.
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Harry J. Gary
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F28 - HEAT EXCHANGE IN GENERAL
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Tube mat heat exchanger
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Patent number 4,349,070
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Issue date Sep 14, 1982
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Michael F. Zinn
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Apparatus for containing liquid
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Patent number 4,286,577
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Issue date Sep 1, 1981
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The University of Iowa Research Foundation
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Donald L. Spencer
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F28 - HEAT EXCHANGE IN GENERAL
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Convector for heating rooms
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Patent number 4,073,045
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Issue date Feb 14, 1978
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Aktiebolaget Atomenergi
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Peter H. E. Margen
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Steps, stairs and the like
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Patent number 3,993,122
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Issue date Nov 23, 1976
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Granges Essem Aktiebolag
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Sven Gunnar Svenstam
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F24 - HEATING RANGES VENTILATING
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3881235
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Patent number 3,881,235
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Issue date May 6, 1975
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F24 - HEATING RANGES VENTILATING
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3833054
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Patent number 3,833,054
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Issue date Sep 3, 1974
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F24 - HEATING RANGES VENTILATING
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3396785
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Patent number 3,396,785
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Issue date Aug 13, 1968
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F28 - HEAT EXCHANGE IN GENERAL