Ryuichiro Arai

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical head for an optical recording and reproducing apparatus
- Patent number 4,841,507
- Issue date Jun 20, 1989
- Mitsubishi Denki Kabushiki Kaisha
- Hitoshi Imai
- G11 - INFORMATION STORAGE