Jian DU

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Patents Grantslast 30 patents

Information Patent Grant
Automatic measuring instrument and measuring method for unconventio...
- Patent number 9,709,474
- Issue date Jul 18, 2017
- PETRO CHINA CO., LTD. SOUTHWEST OIL AND GAS FIELD EXPLORATION AND DEVELOPMENT...
- Jian Du
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Automatic Measuring Instrument and Measuring Method for Unconventio...
- Publication number 20150369715
- Publication date Dec 24, 2015
- PETRO CHINA CO. LTD SOUTHWEST OIL AND GAS FIELD EXPLORATION AND DEVELOPMENT R...
- Jian DU
- G01 - MEASURING TESTING