Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352112 | Reflector with air pressure means | Fritz Leonhardt, Wolfhart Andra, Jorg Schlaich | 1982-09-28 |
| 4326363 | Waisted envelope for tubular building structures | Fritz Leonhardt, Wolfhart Andra, Jorg Schlaich, Gunter Mayr | 1982-04-27 |