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Christopher M. Zetena
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Cincinnati, OH, US
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last 30 patents
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Patent Grant
Dual range periodic chemical dispenser for swimming pools
Patent number
5,133,381
Issue date
Jul 28, 1992
Olin Corporation
Richard B. Wood
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Patent Grant
Pool chemical dispenser
Patent number
RE33861
Issue date
Mar 31, 1992
Olin Corporation
Christopher M. Zetena
137 - Fluid handling
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Patent Grant
Pool chemical dispenser
Patent number
4,867,196
Issue date
Sep 19, 1989
Olin Corporation
Christopher M. Zetena
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE