Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880362 | Rotor with stabilizing magnets | Oliver Laing, Nikolaus Laing | 1989-11-14 |
| 4874300 | Ceramic step bearing in a centrifugal pump | Ludwig Ludin, Johannes Nikoleus Laing | 1989-10-17 |
| 4869314 | Heat exchanger with secondary and tertiary heat exchange surface | Oliver Laing, Birger J. Laing, Doerte Laing | 1989-09-26 |
| 4834628 | Rotor-magnet unit | — | 1989-05-30 |
| 4822256 | Bearing support for spherical pumps | — | 1989-04-18 |
| 4818193 | Centrifugal pump selectively mountable in centerline or inline position | Birger J. Laing | 1989-04-04 |