Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877046 | Closing and injection valve especially for hot gas defrosting in freezing and cooling installations | Per R. Samuelsen | 1989-10-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877046 | Closing and injection valve especially for hot gas defrosting in freezing and cooling installations | Per R. Samuelsen | 1989-10-31 |