Yoshio Tatsumi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Battery lead plate member for an electronic wrist watch
- Patent number 4,114,365
- Issue date Sep 19, 1978
- Kabushiki Kaisha Daini Seikosha
- Eiichi Matsuura
- G04 - HOROLOGY
Information Patent Grant
Bearing for a timepiece train
- Patent number 4,102,123
- Issue date Jul 25, 1978
- Kabushiki Kaisha Daini Seikosha
- Yoshio Tatsumi
- G04 - HOROLOGY