Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880362 | Rotor with stabilizing magnets | Karsten Laing, Nikolaus Laing | 1989-11-14 |
| 4873828 | Energy storage for off peak electricity | Johannes L. N. Laing | 1989-10-17 |
| 4869314 | Heat exchanger with secondary and tertiary heat exchange surface | Karsten Laing, Birger J. Laing, Doerte Laing | 1989-09-26 |