Hiroshi Ishii

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Suwa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Step motor control mechanism for electronic timepiece
- Patent number 4,715,725
- Issue date Dec 29, 1987
- Seiko Epson Corporation
- Yoshikazu Kawamura
- G04 - HOROLOGY
Information Patent Grant
Step motor control mechanism for electronic timepiece
- Patent number 4,599,005
- Issue date Jul 8, 1986
- Seiko Epson Corporation
- Yoshikazu Kawamura
- G04 - HOROLOGY
Information Patent Grant
Step motor control mechanism for electronic timepiece
- Patent number 4,522,507
- Issue date Jun 11, 1985
- Kabushiki Kaisha Suwa Seikosha
- Yoshikazu Kawamura
- G04 - HOROLOGY
Information Patent Grant
Step motor control mechanism for electronic timepiece
- Patent number 4,370,065
- Issue date Jan 25, 1983
- Kabushiki Kaisha Suwa Seikosha
- Yoshikazu Kawamura
- G04 - HOROLOGY
Information Patent Grant
Step motor control mechanism for electronic timepiece
- Patent number 4,212,156
- Issue date Jul 15, 1980
- Kabushiki Kaisha Suwa Seikosha
- Yoshikazu Kawamura
- G04 - HOROLOGY
Information Patent Grant
Step motor control mechanism for electronic timepiece
- Patent number 4,192,131
- Issue date Mar 11, 1980
- Kabushiki Kaisha Suwa Seikosha
- Minoru Hosokawa
- G04 - HOROLOGY