Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7533520 | Exhaust aftertreatment mixer with stamped muffler flange | C. Raymond Cheng | 2009-05-19 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7533520 | Exhaust aftertreatment mixer with stamped muffler flange | C. Raymond Cheng | 2009-05-19 |