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Sumitomo Construction Co., Ltd.
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Damping top, damping rod, and damping device using same
Patent number
6,230,450
Issue date
May 15, 2001
Sumitomo Construction Co., Ltd.
Eiji Kuroda
E04 - BUILDING
Information
Patent Grant
Method of installing seismic damping wall
Patent number
5,740,652
Issue date
Apr 21, 1998
Sumitomo Construction Co., Ltd.
Katsufumi Inoue
E04 - BUILDING
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