Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828464 | Diaphragm pump device | Heinz Sayer, Gerhard Gebauer | 1989-05-09 |
| 4800710 | Rotary mower | Wilhelm von Allwoerden | 1989-01-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828464 | Diaphragm pump device | Heinz Sayer, Gerhard Gebauer | 1989-05-09 |
| 4800710 | Rotary mower | Wilhelm von Allwoerden | 1989-01-31 |