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last 30 patents
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Patent Grant
Rotary magnetic head cylinder device for reduced vibration and prop...
Patent number
5,661,622
Issue date
Aug 26, 1997
Hitachi, Ltd.
Masanori Kochi
G11 - INFORMATION STORAGE
Information
Patent Grant
Helical scan type magnetic recording and/or reproducing apparatus h...
Patent number
5,193,045
Issue date
Mar 9, 1993
Hitachi, Ltd.
Masanori Kochi
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotary magnetic head cylinder device for suppressing vibrations ofa...
Patent number
4,833,562
Issue date
May 23, 1989
Hitachi Ltd.
Masanori Kochi
G11 - INFORMATION STORAGE
Information
Patent Grant
Balance compensated rotary magnetic head device
Patent number
4,823,218
Issue date
Apr 18, 1989
Hitachi, Ltd.
Makoto Ibe
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotary magnetic head assembly
Patent number
4,725,910
Issue date
Feb 16, 1988
Hitachi, Ltd.
Nobuyuki Kaku
G11 - INFORMATION STORAGE