Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682011 | Sealing ring arrangement for a spin-stabilized projectile | Henning von Seidlitz, Ralf Herrmann | 1997-10-28 |
| 5664359 | Rifled weapon barrel and method of making the same | Henning Seidlitz, Ralf Herrmann | 1997-09-09 |