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Jack R. Armitage
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Kearns, UT, US
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last 30 patents
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Patent Grant
Ragless propeller draft tube mixer
Patent number
4,647,215
Issue date
Mar 3, 1987
Envirotech Corporation
Jack R. Armitage
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Grant
Ragless propeller draft tube mixer
Patent number
4,575,256
Issue date
Mar 11, 1986
Envirotech Corporation
Jack R. Armitage
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL