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Duane B. Schultz
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Sauk Rapids, MN, US
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last 30 patents
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Patent Grant
Environmentally controlled crop storage building
Patent number
6,139,424
Issue date
Oct 31, 2000
Winkelman Building Corp.
Duane B. Schultz
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL