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Process for absorbing ozone
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Patent number 4,353,717
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Issue date Oct 12, 1982
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Hoechst Aktiengesellschaft
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Peter Herbrechtsmeier
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Process for the treatment of water
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Patent number 4,255,257
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Issue date Mar 10, 1981
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Hoechst Aktiengesellschaft
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Gunther Greiner
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE