Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9784162 | Silencer and catalytic converter apparatus with adjustable blocking panel | Haiqing Liu, Shazam S. Williams | 2017-10-10 |
| 9551254 | Silencer and catalytic converter apparatus with adjustable blocking panel | Haiqing Liu, Shazam S. Williams | 2017-01-24 |