Shixian Chen

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Oscillatory roller transmission
- Patent number 5,989,144
- Issue date Nov 23, 1999
- Zhi Chen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Oscillatory tooth and needle gear transmitting devices
- Patent number 4,798,104
- Issue date Jan 17, 1989
- Shixian Chen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...