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                        Precast concrete plates
                    
                                            
                                - 
                                    Patent number 6,379,601
                                
 
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                                    Issue date Apr 30, 2002
                                
 
                        
                                            
                                - 
                                        
                                    Rohm and Haas Company
                                 
                                - 
                                        
                                    Michael Damian Bowe
                                 
                        
                                            
                                - 
                                        
                                    C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
                                 
                        
                 
             
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                        Precast concrete plates
                    
                                            
                                - 
                                    Patent number 6,311,448
                                
 
                                - 
                                    Issue date Nov 6, 2001
                                
 
                        
                                            
                                - 
                                        
                                    Rohm and Haas Company
                                 
                                - 
                                        
                                    Michael Damian Bowe
                                 
                        
                                            
                                - 
                                        
                                    C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
                                 
                        
                 
             
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                        1455657
                    
                                            
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                                    Patent number 1,455,657
                                
 
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                                    Issue date May 15, 1923
                                
 
                        
                                                                
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                                    E04 - BUILDING
                                 
                        
                 
             
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                        1399023
                    
                                            
                                - 
                                    Patent number 1,399,023
                                
 
                                - 
                                    Issue date Dec 6, 1921
                                
 
                        
                                                                
                                - 
                                        
                                    E04 - BUILDING