Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6089788 | Vertical drain | — | 2000-07-18 |
| 5551808 | Interlocking joint | Joaquim P. Siu | 1996-09-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6089788 | Vertical drain | — | 2000-07-18 |
| 5551808 | Interlocking joint | Joaquim P. Siu | 1996-09-03 |