Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834923 | Method of concrete construction utilizing a concrete formwork of modular plank elements | — | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834923 | Method of concrete construction utilizing a concrete formwork of modular plank elements | — | 1989-05-30 |