Yunosuke Iizuka

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Kyobashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Bore hole scanner with position detecting device and light polarizers
- Patent number 4,899,277
- Issue date Feb 6, 1990
- Shimizu Construction Co., Ltd.
- Yunosuke Iizuka
- E21 - EARTH DRILLING MINING
Information Patent Grant
Borehole scanner and sonde position locator for spectral analysis o...
- Patent number 4,779,201
- Issue date Oct 18, 1988
- Shimizu Construction Co., Ltd.
- Yunosuke Iizuka
- E21 - EARTH DRILLING MINING