Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867638 | Split ring seal of a centrifugal pump | Albert A. Handtmann, Erwin Gebhard, Franz Fischer, Valentin Schroder | 1989-09-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867638 | Split ring seal of a centrifugal pump | Albert A. Handtmann, Erwin Gebhard, Franz Fischer, Valentin Schroder | 1989-09-19 |