Ou ZHAO

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Helicopter
- Patent number 7,871,032
- Issue date Jan 18, 2011
- Qin Zhao
- B64 - AIRCRAFT AVIATION COSMONAUTICS

Patents Applicationslast 30 patents

Information Patent Application
NOVEL HELICOPTER
- Publication number 20090032638
- Publication date Feb 5, 2009
- Qin ZHAO
- B64 - AIRCRAFT AVIATION COSMONAUTICS