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John D. Dyson
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Richmond, VA, US
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Patents Grants
last 30 patents
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Patent Grant
Filtration system underdrain
Patent number
7,090,771
Issue date
Aug 15, 2006
Infilco Degremont, Inc.
John D. Dyson
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Patents Applications
last 30 patents
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Patent Application
Filtration system underdrain
Publication number
20040055944
Publication date
Mar 25, 2004
Ondeo Degremont, Inc.
John D. Dyson
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL