Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4930420 | Seal for the nozzle opening of a projectile | Kalr-Heinz Silligmann, Siegmar Fischer, Ulf Hahn | 1990-06-05 |
| 4759292 | Spinstabilized projectile | Karl-Heinz Silligmann | 1988-07-26 |