Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7788960 | Multi-walled tube and method of manufacture | Louis Hagedorn | 2010-09-07 |
| 7160519 | Serviceable exhaust aftertreatment device, and configured cylindrical bodies for coupling | Duane E. Norby | 2007-01-09 |