Nan; Fei
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nan; Fei.The latest application filed is for "ultra-high temperature rigidity seal ball valve".
- Nan; Fei - Zhejiang CN
- NAN; Fei - Wenzhou Zhejiang
| Patent | Date |
|---|---|
| Ultra-high temperature rigidity seal ball valve Grant 9,447,898 - Yang , et al. September 20, 2 | 2016-09-20 |
| Ultra-high Temperature Rigidity Seal Ball Valve App 20160265688 - YANG; Rongshui ; et al. | 2016-09-15 |
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