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Hardness indicator
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Patent number 6,190,611
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Issue date Feb 20, 2001
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Miura Co., LTD.,
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Kazuhiro Tachino
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G01 - MEASURING TESTING
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Membrane deaerator apparatus
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Patent number 5,584,914
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Issue date Dec 17, 1996
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Miura Co., Ltd.
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Yasutoshi Senoo
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE