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3646206
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Patent number 3,646,206
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Issue date Feb 29, 1972
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3542798
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Patent number 3,542,798
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Issue date Nov 24, 1970
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2159299
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Patent number 2,159,299
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Issue date May 23, 1939
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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1988098
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Patent number 1,988,098
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Issue date Jan 15, 1935
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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1628087
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Patent number 1,628,087
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Issue date May 10, 1927
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...