Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874300 | Ceramic step bearing in a centrifugal pump | Karsten Laing, Johannes Nikoleus Laing | 1989-10-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874300 | Ceramic step bearing in a centrifugal pump | Karsten Laing, Johannes Nikoleus Laing | 1989-10-17 |