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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Process for formation of artificial seaweed bed
Patent number
5,639,657
Issue date
Jun 17, 1997
Nippon Tetrapod Co., Ltd.
Masamichi Saiki
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Sloping blocks and revetment structure using the same
Patent number
4,813,812
Issue date
Mar 21, 1989
Nippon Tetrapod Co. Ltd.
Minoru Hasegawa
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Wave dissipating wall
Patent number
3,995,434
Issue date
Dec 7, 1976
Nippon Tetrapod Co., Ltd.
Hisanori Kato
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Patents Applications
last 30 patents
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