Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6736432 | Combination structure of the assembly plates and the cylinder of a lock latch | Chih-Cheng Huang | 2004-05-18 |
| 6688660 | Door lock | — | 2004-02-10 |
| 6681605 | Tubular doorknob with adjustment devices for firmly mounting the tubular doorknob in a door | — | 2004-01-27 |