Maria,Liz and OMar By gsmstech Aug 12, 1877 Phonographs Oct 11, 1878 Subsquent wax May 21, 1960 Tube tester Oct 14, 1960 IBM Executary Dictation Machines magnet belt Jul 24, 1962 Compact acssette Jul 12, 1965 radio Apr 22, 1989 mp3palyers Dec 7, 1992 mini disc
