NATIONAL UNIVERSITY CORPORATION THE UNIVERSITY OF ELECTROCOMMUNICATIONS

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Chofu-shi, JP

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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