Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4350224 | Rescue system on high rise buildings for evacuating persons in the case of fire | Ernst Landsberg, Plano Zschernack | 1982-09-21 |
| 4214546 | Convertible amphibious vehicle | Heinz Glaser | 1980-07-29 |