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                                         Fernando  Gonzalez Fernando  Gonzalez
 
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                        Signal reproduction apparatus
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                                         Matsushita Electric Industrial Co., Ltd. Matsushita Electric Industrial Co., Ltd.
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                                         Steven H. Young Steven H. Young
 
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                                    Issue date Nov 12, 1968
                                
 
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                                    Issue date Oct 23, 1951
                                
 
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                                    Issue date May 30, 1950
                                
 
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                                    Issue date Apr 17, 1945
                                
 
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                                    Issue date Mar 7, 1944
                                
 
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