Toshinobu Araoka

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Yahata, Kitaky ushu, Fukuoka, JA

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Patents Grantslast 30 patents

Information Patent Grant
Fan disturbing sand at the bottom of a body of water so that it may...
- Patent number 3,945,761
- Issue date Mar 23, 1976
- Toshinobu Araoka
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING