Chang; Jing-Chen
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Jing-Chen.The latest application filed is for "electric door lock".
- Chang; Jing-Chen - Yu-Lin Hsien TW
- Chang; Jing-Chen - Yun-Lin Hsien TW
- Chang; Jing-Chen - Tou-Liu TW
- Chang; Jing-Chen - Tou-Liu City TW
| Patent | Date |
|---|---|
| Electric door lock Grant 8,365,561 - Chang February 5, 2 | 2013-02-05 |
| Electric door lock App 20120036904 - Chang; Jing-Chen | 2012-02-16 |
| Electric lock Grant 7,516,633 - Chang April 14, 2 | 2009-04-14 |
| Two-handled lock Grant 7,472,571 - Chang January 6, 2 | 2009-01-06 |
| Electric door lock App 20070169525 - Chang; Jing-Chen | 2007-07-26 |
| Electric lock App 20070051145 - Chang; Jing-Chen | 2007-03-08 |
| Electric Padlock Grant 6,993,943 - Chang February 7, 2 | 2006-02-07 |
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