Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7201036 | Residual life indicating system | John P. Custer, Kenneth L. Kessler, Reuben Harel | 2007-04-10 |
| 7115152 | Four bed regenerable filter system | David K. Friday | 2006-10-03 |
| 4697539 | Arrangement for interconnecting concrete pontoons | — | 1987-10-06 |