Ken-ichi Ueda

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Chofu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for excavating submerged stratum
- Patent number 7,802,384
- Issue date Sep 28, 2010
- Japan Drilling Co., Ltd.
- Toshio Kobayashi
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Method and device for excavating submerged stratum
- Publication number 20090126235
- Publication date May 21, 2009
- JAPAN DRILLING CO., LTD.
- Toshio Kobayashi
- E21 - EARTH DRILLING MINING