Chaoyi LI

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Hainan, CN

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Patents Applicationslast 30 patents

Information Patent Application
SEMI-LEFT-HAND-THREAD-REMOVAL SCREW
- Publication number 20170058935
- Publication date Mar 2, 2017
- Chaoyi LI
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...