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Injection quill for water treatment
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Patent number 6,238,557
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Issue date May 29, 2001
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BetzDearborn Inc.
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Robert R. Ziemer
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Injection quill for water treatment
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Patent number 6,165,372
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Issue date Dec 26, 2000
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BetzDearborn Inc.
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Robert R. Ziemer
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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