Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8621899 | Tamper indicating padlock | Renny Tse-Haw Ling | 2014-01-07 |
| 8353184 | Tamper indicating padlock | Renny Tse-Haw Ling | 2013-01-15 |
| 7216517 | Padlock with a status indicator | Renny Tse-Haw Ling | 2007-05-15 |
| 7051440 | Tool device | Christian Bremicker, Renny Tse-Haw Ling, Chi-Chang Tsai | 2006-05-30 |