Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4598886 | Double parasol, favorable interference airplane | Gottfried O. Friebel | 1986-07-08 |
| D263135 | Airplane | Gottfried O. Friebel | 1982-02-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4598886 | Double parasol, favorable interference airplane | Gottfried O. Friebel | 1986-07-08 |
| D263135 | Airplane | Gottfried O. Friebel | 1982-02-23 |