Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326363 | Waisted envelope for tubular building structures | Fritz Leonhardt, Wolfhart Andra, Wilhelm Zellner, Jorg Schlaich | 1982-04-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326363 | Waisted envelope for tubular building structures | Fritz Leonhardt, Wolfhart Andra, Wilhelm Zellner, Jorg Schlaich | 1982-04-27 |