Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842247 | Method and apparatus for the detection of helicopters | Karl-Heinz Simon, Hans-Richard Weinheimer | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842247 | Method and apparatus for the detection of helicopters | Karl-Heinz Simon, Hans-Richard Weinheimer | 1989-06-27 |