Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4630546 | Double groove center sill | Manfred Katz | 1986-12-23 |
| 4630548 | Center sill horizontal divider | Phillip G. Przybylinski | 1986-12-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4630546 | Double groove center sill | Manfred Katz | 1986-12-23 |
| 4630548 | Center sill horizontal divider | Phillip G. Przybylinski | 1986-12-23 |