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Bilevel student activity table
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Patent number 4,825,780
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Issue date May 2, 1989
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Ronald M. Maxwell
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2748836
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Patent number 2,748,836
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Issue date Jun 5, 1956
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2659642
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Patent number 2,659,642
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Issue date Nov 17, 1953
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2486186
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Patent number 2,486,186
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Issue date Oct 25, 1949
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2461385
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Patent number 2,461,385
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Issue date Feb 8, 1949
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2202196
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Patent number 2,202,196
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Issue date May 28, 1940
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2109869
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Patent number 2,109,869
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Issue date Mar 1, 1938
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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1973866
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Patent number 1,973,866
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Issue date Sep 18, 1934
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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1183502
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Patent number 1,183,502
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Issue date May 16, 1916
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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1182339
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Patent number 1,182,339
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Issue date May 9, 1916
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...