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Rotating heat exchanger
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Patent number 4,146,975
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Issue date Apr 3, 1979
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Fives-Cail Babcock
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Victor Duhem
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F26 - DRYING
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3571944
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Patent number 3,571,944
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Issue date Mar 23, 1971
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F26 - DRYING
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3490754
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Patent number 3,490,754
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Issue date Jan 20, 1970
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F26 - DRYING
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3319351
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Patent number 3,319,351
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Issue date May 16, 1967
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F26 - DRYING
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2554705
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Patent number 2,554,705
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Issue date May 29, 1951
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F26 - DRYING
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1819102
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Patent number 1,819,102
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Issue date Aug 18, 1931
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F26 - DRYING
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1477823
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Patent number 1,477,823
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Issue date Dec 18, 1923
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F26 - DRYING
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712258
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Patent number 712,258
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Issue date Oct 28, 1902
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F26 - DRYING