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Sadao Kojima
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Hachioji, JP
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last 30 patents
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Patent Grant
Local water cleaning method for use in consecutive water areas
Patent number
4,879,046
Issue date
Nov 7, 1989
Kaiyo Kogyo Kabushiki Kaisha
Sadao Kojima
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE