Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D386243 | Diffuser for water aeration | Hannu Kahonen, Hannu Ryynanen | 1997-11-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D386243 | Diffuser for water aeration | Hannu Kahonen, Hannu Ryynanen | 1997-11-11 |