Chiang; Chi-Tsao
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chiang; Chi-Tsao.The latest application filed is for "adjustable hinged door closer".
- Chiang; Chi-Tsao - Daxi Township Taoyuan County TW
- Chiang; Chi-Tsao - Taoyuan Hsien TW
- Chiang; Chi-Tsao - Tao-Yuan Hsien TW
| Patent | Date |
|---|---|
| Adjustable hinged door closer Grant 8,181,311 - Chiang , et al. May 22, 2 | 2012-05-22 |
| Adjustable Hinged Door Closer App 20110030167 - Chiang; Chi-Tsao ; et al. | 2011-02-10 |
| Door closer App 20080034535 - Chiang; Chi-Tsao | 2008-02-14 |
| Door closer Grant 6,493,904 - Chiang December 17, 2 | 2002-12-17 |
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