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                        Handpull musical instrument
                    
                                            
                                - 
                                    Patent number 10,733,967
                                
 
                                - 
                                    Issue date Aug 4, 2020
                                
 
                        
                                            
                                - 
                                        
                                    Hohner Musikinstrumente GmbH
                                 
                                - 
                                        
                                    Thomas  Trapp
                                 
                        
                                            
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        Free bass a system
                    
                                            
                                - 
                                    Patent number 10,515,616
                                
 
                                - 
                                    Issue date Dec 24, 2019
                                
 
                        
                                            
                                - 
                                        
                                    Tanate  Ua-Aphithorn
                                 
                        
                                            
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        Portable keyboard system
                    
                                            
                                - 
                                    Patent number 7,667,119
                                
 
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                                    Issue date Feb 23, 2010
                                
 
                        
                                            
                                - 
                                        
                                    Schlapkohl Investments
                                 
                                - 
                                        
                                    Thomas P.  Schlapkohl
                                 
                        
                                            
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        In-line keyboard
                    
                                            
                                - 
                                    Patent number 6,218,601
                                
 
                                - 
                                    Issue date Apr 17, 2001
                                
 
                        
                                            
                                - 
                                        
                                    Vincent F. Pientka
                                 
                        
                                            
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        Microphone pickup system
                    
                                            
                                - 
                                    Patent number 4,837,836
                                
 
                                - 
                                    Issue date Jun 6, 1989
                                
 
                        
                                            
                                - 
                                        
                                    Lester M. Barcus
                                 
                        
                                            
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        Fiber optic musical instruments
                    
                                            
                                - 
                                    Patent number 4,442,750
                                
 
                                - 
                                    Issue date Apr 17, 1984
                                
 
                        
                                            
                                - 
                                        
                                    Optical Technologies, Inc.
                                 
                                - 
                                        
                                    George A. Bowley
                                 
                        
                                            
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3918343
                    
                                            
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                                    Patent number 3,918,343
                                
 
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                                    Issue date Nov 11, 1975
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3610802
                    
                                            
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                                    Patent number 3,610,802
                                
 
                                - 
                                    Issue date Oct 5, 1971
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3534145
                    
                                            
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                                    Patent number 3,534,145
                                
 
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                                    Issue date Oct 13, 1970
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3419668
                    
                                            
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                                    Patent number 3,419,668
                                
 
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                                    Issue date Dec 31, 1968
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3406243
                    
                                            
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                                    Patent number 3,406,243
                                
 
                                - 
                                    Issue date Oct 15, 1968
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3402251
                    
                                            
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                                    Patent number 3,402,251
                                
 
                                - 
                                    Issue date Sep 17, 1968
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3318991
                    
                                            
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                                    Patent number 3,318,991
                                
 
                                - 
                                    Issue date May 9, 1967
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3311010
                    
                                            
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                                    Patent number 3,311,010
                                
 
                                - 
                                    Issue date Mar 28, 1967
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3278671
                    
                                            
                                - 
                                    Patent number 3,278,671
                                
 
                                - 
                                    Issue date Oct 11, 1966
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3250843
                    
                                            
                                - 
                                    Patent number 3,250,843
                                
 
                                - 
                                    Issue date May 10, 1966
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS
                                 
                        
                 
             
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                        3229020
                    
                                            
                                - 
                                    Patent number 3,229,020
                                
 
                                - 
                                    Issue date Jan 11, 1966
                                
 
                        
                                                                
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                                    G10 - MUSICAL INSTRUMENTS ACOUSTICS