Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700766 | Use of an amphoteric surfactant as a friction-reducing agent | Martin Hellsten | 1997-12-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700766 | Use of an amphoteric surfactant as a friction-reducing agent | Martin Hellsten | 1997-12-23 |