Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7080486 | Pass-through firestop device | Paul J. Cobian | 2006-07-25 |
| 6694684 | Pass through firestop device | Paul J. Cobian, Anthony J. Schommer | 2004-02-24 |
| 6398421 | Coupling system for a light conduit | Joseph A. Hoffman | 2002-06-04 |
| 6325550 | Thermally protective coupling for a light conduit lighting system | Joseph A. Hoffman, Stephen J. Pojar | 2001-12-04 |
| 6152578 | Mounting assembly for a light conduit lighting system | Joseph A. Hoffman, Ken J. Hagen | 2000-11-28 |
| 6130976 | Coupling system for a light conduit | Joseph A. Hoffman, Kenneth J. Hagen | 2000-10-10 |
| D304311 | Pop-up timing device | — | 1989-10-31 |