Takashi Segawa

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Yotsukaido, JP

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Patents Grantslast 30 patents

Information Patent Grant
Device for detecting coincident focusing points
- Patent number 4,389,105
- Issue date Jun 21, 1983
- Seiko Koki Kabushiki Kaisha
- Kiyoshi Kitai
- G02 - OPTICS
Information Patent Grant
Automatic focusing device
- Patent number 4,359,634
- Issue date Nov 16, 1982
- Seiko Koki Kabushiki Kaisha
- Takeo Saito
- G02 - OPTICS
Information Patent Grant
Automatic focusing adjustor device
- Patent number 4,316,085
- Issue date Feb 16, 1982
- Seiko Koki Kabushiki Kaisha
- Takeo Saito
- G02 - OPTICS
Information Patent Grant
Light emitting indicating circuit for a timepiece
- Patent number 4,119,892
- Issue date Oct 10, 1978
- Seiko Koki Kabushiki Kaisha
- Takeo Saito
- G04 - HOROLOGY