Shu Jun Shan

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Changsha, CN

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Patents Grantslast 30 patents

Information Patent Grant
Directional drilling using mechanical waves detectors
- Patent number 9,951,606
- Issue date Apr 24, 2018
- Alcorp Ltd.
- Samuel Ariaratnam
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DIRECTIONAL DRILLING USING MECHANICAL WAVES DETECTORS
- Publication number 20160298443
- Publication date Oct 13, 2016
- Samuel ARIARATNAM
- G01 - MEASURING TESTING