Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8053995 | LED light string without additional resistors | Chu-Cheng Chang, Cheng-Fen Chang, Chen-Hsien Chang | 2011-11-08 |
| 8044599 | Light string with alternate LED lamps and incandescent lamps | Chu-Cheng Chang, Cheng-Fen Chang, Chen-Hsien Chang | 2011-10-25 |
| 7597454 | Christmas light string with socket for connecting to another christmas light string | Chu-Cheng Chang, Cheng-Fen Chang, Chen-Hsien Chang | 2009-10-06 |