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                        Fluid mixing system
                    
                                            
                                - 
                                    Patent number 7,226,203
                                
 
                                - 
                                    Issue date Jun 5, 2007
                                
 
                        
                                            
                                - 
                                        
                                    Schlumberger Technology Corporation
                                 
                                - 
                                        
                                    Joel  Rondeau
                                 
                        
                                            
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                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        Fluid mixing system
                    
                                            
                                - 
                                    Patent number 7,056,008
                                
 
                                - 
                                    Issue date Jun 6, 2006
                                
 
                        
                                            
                                - 
                                        
                                    Schlumberger Technology Corporation
                                 
                                - 
                                        
                                    Joel  Rondeau
                                 
                        
                                            
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        Automated cement mixing system
                    
                                            
                                - 
                                    Patent number 6,786,629
                                
 
                                - 
                                    Issue date Sep 7, 2004
                                
 
                        
                                            
                                - 
                                        
                                    Schlumberger Technology Corporation
                                 
                                - 
                                        
                                    Joel  Rondeau
                                 
                        
                                            
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        Concrete recovery system
                    
                                            
                                - 
                                    Patent number 6,682,655
                                
 
                                - 
                                    Issue date Jan 27, 2004
                                
 
                        
                                            
                                - 
                                        
                                    Knelson Patents Inc.
                                 
                                - 
                                        
                                    David James Beckham
                                 
                        
                                            
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        Fluid mixing system
                    
                                            
                                - 
                                    Patent number 6,491,421
                                
 
                                - 
                                    Issue date Dec 10, 2002
                                
 
                        
                                            
                                - 
                                        
                                    Schlumberger Technology Corporation
                                 
                                - 
                                        
                                    Joel  Rondeau
                                 
                        
                                            
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        3888470
                    
                                            
                                - 
                                    Patent number 3,888,470
                                
 
                                - 
                                    Issue date Jun 10, 1975
                                
 
                        
                                                                
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                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        2954215
                    
                                            
                                - 
                                    Patent number 2,954,215
                                
 
                                - 
                                    Issue date Sep 27, 1960
                                
 
                        
                                                                
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        2013837
                    
                                            
                                - 
                                    Patent number 2,013,837
                                
 
                                - 
                                    Issue date Sep 10, 1935
                                
 
                        
                                                                
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        1980184
                    
                                            
                                - 
                                    Patent number 1,980,184
                                
 
                                - 
                                    Issue date Nov 13, 1934
                                
 
                        
                                                                
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        1898890
                    
                                            
                                - 
                                    Patent number 1,898,890
                                
 
                                - 
                                    Issue date Feb 21, 1933
                                
 
                        
                                                                
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE
                                 
                        
                 
             
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                        1730893
                    
                                            
                                - 
                                    Patent number 1,730,893
                                
 
                                - 
                                    Issue date Oct 8, 1929
                                
 
                        
                                                                
                                - 
                                        
                                    B28 - WORKING CEMENT, CLAY, OR STONE