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Electrical insulating oil compositions
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Patent number 4,324,933
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Issue date Apr 13, 1982
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Nippon Oil Co., Ltd.
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Shoji Kimura
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Rust inhibitors and compositions of same
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Patent number 4,247,414
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Issue date Jan 27, 1981
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Nippon Oil Company, Ltd.
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Shoji Kimura
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Electrical insulating oil compositions
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Patent number 4,189,391
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Issue date Feb 19, 1980
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Nippon Oil Co., Ltd.
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Shoji Kimura
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...