Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6521834 | Fire stopping cover plate for fire stopping electrical outlets and switches | Michael G. Dykhoff, Robert J. Boros | 2003-02-18 |
| 6153668 | Low density fire barrier material and method of making | Robert E. Gestner | 2000-11-28 |