Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6256948 | Fire-resistant passage for lines | — | 2001-07-10 |
| D428325 | Fire preventing duct for passing cables and pipes through walls and bulkheads | Dagfinn Nilsen | 2000-07-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6256948 | Fire-resistant passage for lines | — | 2001-07-10 |
| D428325 | Fire preventing duct for passing cables and pipes through walls and bulkheads | Dagfinn Nilsen | 2000-07-18 |