Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4338959 | Device to automatically add a controlled amount of corrosion inhibitor in an engine cooling system | Robert H. Krueger, Robert R. Kelly, Rudolf M. Hempel | 1982-07-13 |
| 4333516 | Corrodible container for automatic addition of corrosion inhibitor to a coolant system | Robert H. Krueger, Clarence E. Albertson | 1982-06-08 |