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John E. Nahra
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Potomac, MD, US
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Patents Grants
last 30 patents
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Patent Grant
Method and apparatus for treating fluent materials
Patent number
RE32695
Issue date
Jun 14, 1988
DASI Industries, Inc.
John E. Nahra
261 - Gas and liquid contact apparatus
Information
Patent Grant
Method and apparatus for treating liquid materials
Patent number
4,591,463
Issue date
May 27, 1986
DASI Industries, Inc.
John E. Nahra
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information
Patent Grant
Method and apparatus for treating fluent materials
Patent number
4,419,301
Issue date
Dec 6, 1983
Dasi Industries, Inc.
John E. Nahra
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information
Patent Grant
Apparatus for treating fluent materials
Patent number
4,310,476
Issue date
Jan 12, 1982
Dasi Industries, Inc.
John E. Nahra
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES