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Brian W. Hemphill
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Corvallis, OR, US
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last 30 patents
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Patent Grant
Water filtration apparatus having upflow buoyant media filter and d...
Patent number
4,608,181
Issue date
Aug 26, 1986
Neptune Microfloc, Inc.
Andrew K. Hsiung
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL