Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471434 | Joint structure for strengthening steel pipe stability | Hsueh-Hung Chin | 2002-10-29 |
| 6379074 | Coupler structure for steel pipe conjoinment stabilization | Hsueh-Hung Chin | 2002-04-30 |