Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820412 | Element for the transfer of gas into liquids, in particular, for the transfer of oxygen in sewage treatment plants | Karl U. Meyer-Rudolphi | 1989-04-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820412 | Element for the transfer of gas into liquids, in particular, for the transfer of oxygen in sewage treatment plants | Karl U. Meyer-Rudolphi | 1989-04-11 |