Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6378290 | High-frequency ion source | Rainer Killinger, Hans Mueller, Ralph Kukies | 2002-04-30 |
| 4829784 | Method and system for storing inert gas for electric impulse space drives | Hans Berg | 1989-05-16 |