Akio Tamai

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for measuring three-dimensional displacement
- Patent number 5,623,108
- Issue date Apr 22, 1997
- Obayashi Corporation
- Masayuki Kosugi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and system for measuring three-dimensional displacement
- Patent number 5,511,429
- Issue date Apr 30, 1996
- Obayashi Corporation
- Masayuki Kosugi
- E21 - EARTH DRILLING MINING