Chen; Jyi-Feng
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chen; Jyi-Feng.The latest application filed is for "expansion screw set and hollow nail and interior nail thereof".
- Chen; Jyi-Feng - Xindian City TW
- Chen; Jyi Feng - Taipei County TW
| Patent | Date |
|---|---|
| Expansion screw set and hollow nail and interior nail thereof App 20100042164 - Lee; Shih-Tseng ; et al. | 2010-02-18 |
| Cervical collar App 20090264802 - Chen; Jyi Feng | 2009-10-22 |
| Expansion screw set and hollow nail and interior nail thereof App 20080039846 - Lee; Shih-Tseng ; et al. | 2008-02-14 |
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