Keijiro Maeda

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Yokohama, JA

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Patents Grantslast 30 patents

Information Patent Grant
Turntable assembly for phonograph records
- Patent number 4,054,291
- Issue date Oct 18, 1977
- Sony Corporation
- Keijiro Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Pickup arm assembly
- Patent number 4,029,322
- Issue date Jun 14, 1977
- Sony Corporation
- Keijiro Maeda
- G11 - INFORMATION STORAGE