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Richard T. Sewald SR.
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Bethlehem, PA, US
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Patents Grants
last 30 patents
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Patent Grant
Treatment of industrial wastewaters
Patent number
4,465,597
Issue date
Aug 14, 1984
Bethlehem Steel Corp.
Stewart T. Herman
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Patents Applications
last 30 patents
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Patent Application
Method for removal and detoxication of dissolved metals in a rainwa...
Publication number
20040031753
Publication date
Feb 19, 2004
Stewart T. Herman
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL