Katsumi Watanabe

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Kawasaki, JA

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Patents Grantslast 30 patents

Information Patent Grant
Stylus shift mechanism for a phonograph having two concentric records
- Patent number 4,076,256
- Issue date Feb 28, 1978
- Ozen Co., Ltd.
- Katsumi Watanabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Vibration transmission mechanism for a phonograph
- Patent number 4,061,343
- Issue date Dec 6, 1977
- Yugen Kaisha Watanabe Kenkyusho
- Katsumi Watanabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Toy phonograph with automatic pickup arm return means
- Patent number 4,027,887
- Issue date Jun 7, 1977
- Yugen Kaisha Watanabe Kenkyusho
- Katsumi Watanabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Miniature toy sound-reproducing device
- Patent number 4,004,815
- Issue date Jan 25, 1977
- Yugen Kaisha Watanabe Kenkyusho
- Katsumi Watanabe
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Simplified phonograph
- Patent number 3,992,016
- Issue date Nov 16, 1976
- Yugen Kaisha Watanabe Kenkyusho
- Katsumi Watanabe
- G11 - INFORMATION STORAGE