Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4204287 | Knock-down sofa bed with hinged mattress | Warren Hauck, Roy O. Sweeney | 1980-05-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4204287 | Knock-down sofa bed with hinged mattress | Warren Hauck, Roy O. Sweeney | 1980-05-27 |