Kabushiki Kaisha Konoike Gumi

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Earth pressure system shield process
- Patent number 5,180,252
- Issue date Jan 19, 1993
- Kabushiki Kaisha Konoike Gumi
- Hiroshi Tanaka
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling bucket apparatus for cast-in-place piles with expanded bot...
- Patent number 4,971,163
- Issue date Nov 20, 1990
- Kabushiki Kaisha Konoike Gumi
- Akira Ohashi
- E21 - EARTH DRILLING MINING

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