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                        Security ink system
                    
                                            
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                                    Patent number 11,524,516
                                
 
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                                    Issue date Dec 13, 2022
                                
 
                        
                                            
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                                    Gleitsmann Security Inks GmbH
                                 
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                                    Tobias  Fischer
                                 
                        
                                            
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                                    C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
                                 
                        
                 
             
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                        887916
                    
                                            
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                                    Patent number 887,916
                                
 
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                                    Issue date May 19, 1908
                                
 
                        
                                                                
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                                    B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
                                 
                        
                 
             
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                        799208
                    
                                            
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                                    Patent number 799,208
                                
 
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                                    Issue date Sep 12, 1905
                                
 
                        
                                                                
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                                    B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
                                 
                        
                 
             
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                        775911
                    
                                            
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                                    Patent number 775,911
                                
 
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                                    Issue date Nov 29, 1904
                                
 
                        
                                                                
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                                    B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
                                 
                        
                 
             
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                        741693
                    
                                            
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                                    Patent number 741,693
                                
 
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                                    Issue date Oct 20, 1903
                                
 
                        
                                                                
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                                    B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
                                 
                        
                 
             
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                        426849
                    
                                            
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                                    Patent number 426,849
                                
 
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                                    Issue date Apr 29, 1890
                                
 
                        
                                                                
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                                    B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER