Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856735 | Wing sections, in particular lift-wing sections for aircraft | Michael Glen Lotz, Rudiger Vanino, deceased, Peter J. Kuhl, Dieter Welte | 1989-08-15 |
| 4799859 | Helicopter rotor blade control | — | 1989-01-24 |