Toshihiro Yamazaki

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Both of Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tunnel excavator
- Patent number 5,931,601
- Issue date Aug 3, 1999
- Komatsu Ltd.
- Shinichi Terada
- E21 - EARTH DRILLING MINING
Information Patent Grant
Shield type tunneling apparatus
- Patent number 4,818,026
- Issue date Apr 4, 1989
- Kabushiki Kaisha Komatsu Seisakusho
- Toshihiro Yamazaki
- E21 - EARTH DRILLING MINING