Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591904 | Apparatus for diminishing intake vortexes in jet engines | Josef Ballmann | 1997-01-07 |
| 4958700 | Protective facility for suppressing noise produced at high gas flows by engines installed on aircraft | — | 1990-09-25 |