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Vacuum processing unit and apparatus
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Issue date Apr 25, 1989
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Hitachi, Ltd.
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Yutaka Kakehi
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Plasma processor
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Issue date Dec 23, 1986
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Hitachi, Ltd.
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Norio Nakazato
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H01 - BASIC ELECTRIC ELEMENTS
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Desalting method of fuel oil
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Patent number 4,339,330
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Issue date Jul 13, 1982
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Hitachi, Ltd.
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Kiyoshi Fujiwara
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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