Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10563763 | Tank piston with improved seal and cover | Anthony Frank DeJohn | 2020-02-18 |
| 6325384 | Tank piston with improved seal and wiper | Thomas E. Berry, Sr. | 2001-12-04 |
| 6027123 | Tank piston with improved seal and wiper | Thomas E. Berry, Sr. | 2000-02-22 |
| 5845399 | Composite plate pin or ribbon heat exchanger | Douglas M. Dewar, Alexander F. Anderson | 1998-12-08 |
| 5655600 | Composite plate pin or ribbon heat exchanger | Douglas M. Dewar, Alexander F. Anderson | 1997-08-12 |
| 5628363 | Composite continuous sheet fin heat exchanger | Douglas M. Dewar, Alexander F. Anderson | 1997-05-13 |
| 5626188 | Composite machined fin heat exchanger | Douglas M. Dewar, Alexander F. Anderson | 1997-05-06 |