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Oil filter
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Patent number 5,114,575
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Issue date May 19, 1992
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Mitsubishi Oil Co., Ltd.
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Hisashi Yano
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Gas removal pump for liquid
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Patent number 5,085,561
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Issue date Feb 4, 1992
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Mitsubishi Oil Co., Ltd.
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Hisashi Yano
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Gas removable pump for liquid
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Patent number 5,064,452
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Issue date Nov 12, 1991
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Mitsubishi Oil Co., Ltd.
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Hisashi Yano
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Gas removable pump for liquid
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Patent number 5,051,072
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Issue date Sep 24, 1991
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Mitsubishi Oil Co., Ltd.
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Hisashi Yano
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Oil filter I
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Patent number 4,997,556
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Issue date Mar 5, 1991
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Mitsubishi Oil Co., Ltd.
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Hisashi Yano
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Oil filter II
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Patent number 4,976,854
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Issue date Dec 11, 1990
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Mitsubishi Oil Co., Ltd.
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Hisashi Yano
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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