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Isato Watanabe
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Electric power supply device for hand with load
Patent number
5,025,429
Issue date
Jun 18, 1991
Seikosha Co., Ltd.
Isato Watanabe
G04 - HOROLOGY
Information
Patent Grant
Power supply device for hand with luminescence element
Patent number
4,995,022
Issue date
Feb 19, 1991
Seikosha Co., Ltd.
Hidetsugu Ikeda
G01 - MEASURING TESTING
Information
Patent Grant
Timepiece with light emitting device
Patent number
4,995,016
Issue date
Feb 19, 1991
Seikosha Co., Ltd.
Isato Watanabe
G04 - HOROLOGY
Information
Patent Grant
Power supply system for luminous hands
Patent number
4,993,005
Issue date
Feb 12, 1991
Seikosha Co., Ltd.
Isato Watanabe
G04 - HOROLOGY
Information
Patent Grant
Circuit unit for timepiece and process for fabricating the same
Patent number
4,796,239
Issue date
Jan 3, 1989
Seikosha Co., Ltd.
Tsuyoshi Hayakawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of connecting coil
Patent number
4,745,682
Issue date
May 24, 1988
Seikosha Co,, Ltd.
Tsuyoshi Hayakawa
H01 - BASIC ELECTRIC ELEMENTS