Takayasu Oike

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Device for measuring properties of underground water and method the...
- Patent number 5,189,909
- Issue date Mar 2, 1993
- The Tsurumi-Seiki Co., Ltd.
- Takayasu Oike
- E21 - EARTH DRILLING MINING