Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678604 | Fast opening, slow closing, relief valve | Erik Haugaard | 1997-10-21 |
| 5647394 | Control valve | Anders Valbj.o slashed.rn, Siegfried Zenker | 1997-07-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678604 | Fast opening, slow closing, relief valve | Erik Haugaard | 1997-10-21 |
| 5647394 | Control valve | Anders Valbj.o slashed.rn, Siegfried Zenker | 1997-07-15 |