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Hiroshi Kiyosugi
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Magnetic brake system and elevator trouble detection system
Patent number
6,742,634
Issue date
Jun 1, 2004
Hitachi Building Systems Co., Ltd.
Yasushi Watanabe
B60 - VEHICLES IN GENERAL
Patents Applications
last 30 patents
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Patent Application
Magnetic brake system and elevator trouble detection system
Publication number
20030111306
Publication date
Jun 19, 2003
Hitachi Building Systems Co., Ltd.
Yasushi Watanabe
B60 - VEHICLES IN GENERAL