Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4335964 | Injection system for solid friction reducing polymers | Vitold R. Kruka | 1982-06-22 |
| 4263926 | Injection system for solid friction reducing polymers | Vitold R. Kruka | 1981-04-28 |