Zhengtong Li

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Large-torque chain-guide type constant ratio/continuously variable...
- Patent number 9,574,641
- Issue date Feb 21, 2017
- Zhengtong Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
LARGE-TORQUE CHAIN-GUIDE TYPE CONSTANT RATIO/CONTINUOUSLY VARIABLE...
- Publication number 20130090197
- Publication date Apr 11, 2013
- Zhengtong Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...