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Yoshitomo Gotoh
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Hitachi, JP
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last 30 patents
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Patent Grant
Vacuum switch and a vacuum switchgear using the same
Patent number
6,259,051
Issue date
Jul 10, 2001
Hitachi, Ltd.
Toru Tanimizu
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Vacuum switch and a vacuum switchgear using the same
Patent number
6,144,005
Issue date
Nov 7, 2000
Hitachi, Ltd.
Toru Tanimizu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Composite circuit breaker
Patent number
4,538,039
Issue date
Aug 27, 1985
Hitachi, Ltd.
Yoshitomo Gotoh
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER