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73694052 06 Nov 1987 | on 02 Jan 1995 | ELECTROMAGNETIC READ/WRITE HEADS AND MAGNETIC RECORDING DISCS,ELECTROM... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products ELECTROMAGNETIC READ/WRITE HEADS AND MAGNETIC RECORDING DISCS | | | FLEXHEAD Censtor Corp.
74128519 07 Jan 1991 | on 14 Dec 1992 | electromagnetic read/write transducers and magnetic recording discs,el... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products electromagnetic read/write transducers and magnetic recording discs | |