Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889030 | Projectile equipped with deployable parachute | Werner Grosswendt | 1989-12-26 |
| 4889053 | Projectile equipped with braking parachute | Werner Grosswendt, Walter Simon | 1989-12-26 |