Akihiko Okamura

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Structure for preventing frost heave damage to an underground struc...
- Patent number 6,309,142
- Issue date Oct 30, 2001
- Konoike Construction Co., Ltd.
- Kazuo Takeda
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING