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Koozi Aizawa
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Hitachi, JP
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last 30 patents
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Patent Grant
End face mechanical shaft seal for use in hydraulic machines and se...
Patent number
4,746,268
Issue date
May 24, 1988
Hitachi, Ltd.
Osamu Sugimoto
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...