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Material treatment
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Patent number 4,489,506
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Issue date Dec 25, 1984
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Wolverine Corporation
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Ernest C. Brown
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Method of cooking foods
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Patent number 4,471,000
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Issue date Sep 11, 1984
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Wolverine Corporation
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Ernest C. Brown
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A21 - BAKING EDIBLE DOUGHS
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Vapor exchange
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Patent number 4,252,133
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Issue date Feb 24, 1981
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Wolverine Corporation
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Walter E. Buske
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES