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Takuya Okada
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Hitachi, JP
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Patents Grants
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
Information
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
Patents Applications
last 30 patents
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Patent Application
Vacuum switch and vacuum switchgear using the same
Publication number
20020043515
Publication date
Apr 18, 2002
Satoru Kajiwara
H01 - BASIC ELECTRIC ELEMENTS