Yukishige Yamada

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Propelling apparatus for underground propelling construction work
- Patent number 5,904,444
- Issue date May 18, 1999
- Kubota Corporation
- Teruo Kabeuchi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Underground propelling method
- Patent number 5,878,825
- Issue date Mar 9, 1999
- Kubota Corporation
- Shigeaki Okuyama
- E21 - EARTH DRILLING MINING