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Tetsuo Hirai
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Hyogo, JP
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last 30 patents
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Patent Grant
Scroll-type vacuum pump with oil seal between suction and discharge...
Patent number
4,735,559
Issue date
Apr 5, 1988
Mitsubishi Denki Kabushiki Kaisha
Etsuo Morishita
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Patent Grant
Turbine rotatable in one direction in a reciprocating flow
Patent number
4,533,292
Issue date
Aug 6, 1985
Mitsubishi Denki Kabushiki Kaisha
Masahiro Sugihara
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...