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3524691
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Patent number 3,524,691
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Issue date Aug 18, 1970
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2987364
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Patent number 2,987,364
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Issue date Jun 6, 1961
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...