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Portable information terminal and control method of portable information terminal App 20050190482 - Shimomura, Kazuhito | 2005-09-01 |
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Magnetic head for performing perpendicular magnetic recording in a disk drive App 20040151036 - Aoyagi, Yuka ;   et al. | 2004-08-05 |
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Method and apparatus for servo track write in disk drive for perpendicular magnetic recording App 20030021056 - Shimomura, Kazuhito | 2003-01-30 |
Disk drive including preamplifier for perpendicular magnetic recording system App 20020089773 - Shimomura, Kazuhito ;   et al. | 2002-07-11 |
Magnetic recording control system for disk storage drive Grant 6,198,583 - Ohinata , et al. March 6, 2 | 2001-03-06 |