Koken Boring Machine Co., Ltd.

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for upwardly cutting full cutting face of a sh...
- Patent number 4,248,312
- Issue date Feb 3, 1981
- Dowa Mining Co., Ltd.
- Takayuki Jinno
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SEABED CORE SAMPLING DEVICE AND CORE SAMPLING METHOD
- Publication number 20200325745
- Publication date Oct 15, 2020
- Koken Boring Machine Co., Ltd.
- Sachihiro SUENAGA
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Trademarklast 30 trademarks