Keiichi Matsumoto

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Tokorozawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Automatic loading disc player
- Patent number 4,879,705
- Issue date Nov 7, 1989
- Pioneer Electronic Corporation
- Yoshio Aoyagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic loading disc player
- Patent number 4,829,502
- Issue date May 9, 1989
- Pioneer Electronic Corporation
- Yoshiro Aoyagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo apparatus for tracking and rotational speed control
- Patent number 4,748,608
- Issue date May 31, 1988
- Pioneer Electronic Corporation
- Keiichi Matsumoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk player capable of distinguishing external disturbances...
- Patent number 4,722,079
- Issue date Jan 26, 1988
- Pioneer Electronic Corporation
- Keiichi Matsumoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic loading disc player
- Patent number 4,701,902
- Issue date Oct 20, 1987
- Pioneer Electronic Corporation
- Yoshiro Aoyagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking servo control system for an information read-out system
- Patent number 4,544,872
- Issue date Oct 1, 1985
- Pioneer Electronic Corporation
- Hiroyuki Hirano
- G11 - INFORMATION STORAGE