Taro Matsunaga

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Shiojiri-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mainspring mechanism and device having the same
- Patent number 6,763,915
- Issue date Jul 20, 2004
- Seiko Epson Corporation
- Shoichi Nagao
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Mainspring mechanism and device having the same
- Publication number 20030066713
- Publication date Apr 10, 2003
- Shoichi Nagao
- G04 - HOROLOGY