Ryuzo Abe

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for detecting position of a reproducing transducer in a r...
- Patent number 4,453,245
- Issue date Jun 5, 1984
- Victor Company of Japan, Ltd.
- Hiroyuki Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotary recording medium reproducing apparatus capable of performing...
- Patent number 4,429,335
- Issue date Jan 31, 1984
- Victor Company of Japan, Ltd.
- Hiroyuki Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Case for a disc-shaped recording medium
- Patent number 4,419,710
- Issue date Dec 6, 1983
- Victor Company of Japan, Ltd.
- Hiroyuki Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
State indicating device in a rotary recording medium reproducing ap...
- Patent number 4,413,299
- Issue date Nov 1, 1983
- Victor Company of Japan, Ltd.
- Hiroyuki Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotary recording medium reproducing apparatus capable of performing...
- Patent number 4,413,292
- Issue date Nov 1, 1983
- Victor Company of Japan, Ltd.
- Hiroyuki Sugiyama
- G11 - INFORMATION STORAGE