Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298043 | Filter system for smoke or polluted air | Sung-Chuan Mai | 1994-03-29 |
| 5074007 | Cleaner for an exhaust pipe | Sung-Chuan Mai | 1991-12-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298043 | Filter system for smoke or polluted air | Sung-Chuan Mai | 1994-03-29 |
| 5074007 | Cleaner for an exhaust pipe | Sung-Chuan Mai | 1991-12-24 |