Sizuo Yamaguchi

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Correction signal input system for electronic timepiece
- Patent number 4,370,066
- Issue date Jan 25, 1983
- Citizen Watch Company Limited
- Sizuo Yamaguchi
- G04 - HOROLOGY
Information Patent Grant
Digital input means for miniature type electronic devices
- Patent number 4,336,609
- Issue date Jun 22, 1982
- Citizen Watch Co., Ltd.
- Kazunari Kume
- G04 - HOROLOGY
Information Patent Grant
Alarm timepiece
- Patent number 4,272,836
- Issue date Jun 9, 1981
- Citizen Watch Co., Ltd.
- Munetaka Tamaru
- G04 - HOROLOGY
Information Patent Grant
Frequency adjusting circuit
- Patent number 4,225,824
- Issue date Sep 30, 1980
- Citizen Watch Co. Ltd.
- Mitsuo Sekine
- G04 - HOROLOGY