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Water electrolyzing apparatus
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Patent number 4,810,344
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Issue date Mar 7, 1989
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Omco Co., Ltd.
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Tatsuo Okazaki
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Flow switch valve
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Patent number 4,788,389
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Issue date Nov 29, 1988
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Omco Co., Ltd.
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Tatsuo Okazaki
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H01 - BASIC ELECTRIC ELEMENTS