CHENG; Yafang
Patent Applications and Registrations
Patent applications and USPTO patent grants for CHENG; Yafang.The latest application filed is for "device and method for manufacturing coated welding rod".
- CHENG; Yafang - Zhengzhou CN
- CHENG; Yafang - Zhenjiang CN
- Cheng; Yafang - Beijing CN
| Patent | Date |
|---|---|
| Device and Method for Manufacturing Coated Welding Rod App 20220063025 - LONG; Weimin ; et al. | 2022-03-03 |
| Self-shielded Flux-cored Welding Wire With Special Protective Slag Coating Formed In Situ And Manufacture Method Thereof App 20200368853 - LIU; Dashuang ; et al. | 2020-11-26 |
| Controller For Controlling Operations Of An Ultrasonic Diagnosis Detector App 20130237819 - SUN; Jie ; et al. | 2013-09-12 |
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