Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5743758 | Lamp socket with a water and electricity sealing structure | You-Jen Cheng | 1998-04-28 |
| 5667296 | Water-tight Christmas tree light | You-Jen Cheng | 1997-09-16 |
| 5660560 | Water-tight lamp socket | You-Jen Cheng | 1997-08-26 |
| 5590952 | Lamp assembly for Christmas tree light sets | You-Jen Cheng | 1997-01-07 |
| 5547392 | Structure of lamp socket | You-Jen Cheng | 1996-08-20 |
| 5531609 | Structure of lamp socket | You-Jen Cheng | 1996-07-02 |
| 5511989 | Structure of lamp socket | You-Jen Cheng | 1996-04-30 |
| 5492483 | Structure of lamp socket | You-Jen Cheng | 1996-02-20 |
| 5439389 | Structure of lamp socket | You-Jen Cheng | 1995-08-08 |
| 5389008 | Lamp socket assembly | You-Jen Cheng | 1995-02-14 |
| 5350315 | Lamp socket for a Christmas tree light | You-Jen Cheng | 1994-09-27 |