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                        Method of welding steel strip
                    
                                            
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                                    Patent number 4,492,849
                                
 
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                                    Issue date Jan 8, 1985
                                
 
                        
                                            
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                                    Allegheny Ludlum Steel Corporation
                                 
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                                    Jack M. Biegay
                                 
                        
                                            
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                        Method for heat welding selenium
                    
                                            
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                                    Patent number 4,019,014
                                
 
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                                    Issue date Apr 19, 1977
                                
 
                        
                                            
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                                    Xerox Corporation
                                 
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                                    John Frank Byrne
                                 
                        
                                            
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                        Method for metal bonding
                    
                                            
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                                    Patent number 4,012,616
                                
 
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                                    Issue date Mar 15, 1977
                                
 
                        
                                            
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                                    General Electric Company
                                 
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                                    John W. Zelahy
                                 
                        
                                            
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                        3769101
                    
                                            
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                                    Patent number 3,769,101
                                
 
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                                    Issue date Oct 30, 1973
                                
 
                        
                                                                
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                        3701196
                    
                                            
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                                    Patent number 3,701,196
                                
 
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                                    Issue date Oct 31, 1972
                                
 
                        
                                                                
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                        3519406
                    
                                            
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                                    Patent number 3,519,406
                                
 
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                                    Issue date Jul 7, 1970
                                
 
                        
                                                                
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                        3442006
                    
                                            
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                                    Patent number 3,442,006
                                
 
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                                    Issue date May 6, 1969
                                
 
                        
                                                                
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                        3439411
                    
                                            
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                                    Patent number 3,439,411
                                
 
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                                    Issue date Apr 22, 1969
                                
 
                        
                                                                
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                        3392435
                    
                                            
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                                    Patent number 3,392,435
                                
 
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                                    Issue date Jul 16, 1968
                                
 
                        
                                                                
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                        3368272
                    
                                            
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                                    Patent number 3,368,272
                                
 
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                                    Issue date Feb 13, 1968
                                
 
                        
                                                                
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                        3180022
                    
                                            
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                                    Patent number 3,180,022
                                
 
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                                    Issue date Apr 27, 1965
                                
 
                        
                                                                
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                        3133178
                    
                                            
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                                    Patent number 3,133,178
                                
 
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                                    Issue date May 12, 1964
                                
 
                        
                                                                
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                        3083452
                    
                                            
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                                    Patent number 3,083,452
                                
 
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                                    Issue date Apr 2, 1963
                                
 
                        
                                                                
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                        2626459
                    
                                            
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                                    Patent number 2,626,459
                                
 
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                                    Issue date Jan 27, 1953
                                
 
                        
                                                                
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                        2524896
                    
                                            
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                                    Patent number 2,524,896
                                
 
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                                    Issue date Oct 10, 1950
                                
 
                        
                                                                
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                        2439637
                    
                                            
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                                    Patent number 2,439,637
                                
 
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                                    Issue date Apr 13, 1948
                                
 
                        
                                                                
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                        2431781
                    
                                            
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                                    Patent number 2,431,781
                                
 
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                                    Issue date Dec 2, 1947
                                
 
                        
                                                                
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                        2412271
                    
                                            
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                                    Patent number 2,412,271
                                
 
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                                    Issue date Dec 10, 1946
                                
 
                        
                                                                
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                        2342086
                    
                                            
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                                    Patent number 2,342,086
                                
 
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                                    Issue date Feb 15, 1944
                                
 
                        
                                                                
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                        2288869
                    
                                            
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                                    Patent number 2,288,869
                                
 
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                                    Issue date Jul 7, 1942
                                
 
                        
                                                                
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                        2249723
                    
                                            
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                                    Patent number 2,249,723
                                
 
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                                    Issue date Jul 15, 1941
                                
 
                        
                                                                
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                        2206375
                    
                                            
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                                    Patent number 2,206,375
                                
 
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                                    Issue date Jul 2, 1940
                                
 
                        
                                                                
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                        2176602
                    
                                            
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                                    Patent number 2,176,602
                                
 
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                                    Issue date Oct 17, 1939
                                
 
                        
                                                                
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                        2175615
                    
                                            
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                                    Patent number 2,175,615
                                
 
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                                    Issue date Oct 10, 1939
                                
 
                        
                                                                
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                        2055360
                    
                                            
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                                    Patent number 2,055,360
                                
 
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                                    Issue date Sep 22, 1936
                                
 
                        
                                                                
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                        1973341
                    
                                            
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                                    Patent number 1,973,341
                                
 
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                                    Issue date Sep 11, 1934
                                
 
                        
                                                                
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                                    B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR