Shigeyoshi Shibahara

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Shiga, JP

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Patents Grantslast 30 patents

Information Patent Grant
Underground pipe for a thrust boring method and a connecting constr...
- Patent number 5,104,263
- Issue date Apr 14, 1992
- Sekisui Kagaku Kogyo Kabushiki Kaisha
- Shigeyoshi Shibahara
- E21 - EARTH DRILLING MINING