Xiuming Yu

Follow

Person

Handan City, Hebei, 057550, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Oil sealing ring
- Patent number 6,419,234
- Issue date Jul 16, 2002
- Xiuming Yu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...