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Process for treating plated steel sheet
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Patent number 4,959,277
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Issue date Sep 25, 1990
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Nihon Parkerizing Co., Ltd.
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Kenshi Saeki
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Aluminum heat exchanger coating
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Patent number 4,726,886
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Issue date Feb 23, 1988
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Nihon Parkerizing Co., Ltd.
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Hideaki Kaneko
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Aluminum heat exchanger
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Patent number 4,368,776
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Issue date Jan 18, 1983
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Nippondenso Co., Ltd.
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Junichi Negita
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F28 - HEAT EXCHANGE IN GENERAL