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Inventor
WU ZIXIANG
CN
2 patents
Patents
2 patents
US8911484B2
Dec 16, 2014
Multi-axial expandable pedicle screw and an expansion method thereof
LEI WEI
10 citations
78
US8613770B2
Dec 24, 2013
Artificial cervical vertebrae composite joint
LEI WEI
7 citations
61