Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D381834 | Floor product sample frame | C. Frank Potter, Mark R. Hernick, Steve Spangenberg | 1997-08-05 |
| 5065559 | Wall system and method of construction | Douglas R. Zegel, Mark R. Hernick, Michael J. Daniels | 1991-11-19 |
| 4976080 | Wall system and method of construction | Douglas R. Zegel, Mark R. Hernick, Michael J. Daniels | 1990-12-11 |