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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
                                
 
                                - 
                                         Ronald M. Maxwell Ronald M. Maxwell
 
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                                         A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT... 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... 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... 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... 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... 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... 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... 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... 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... 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... A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...