Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637435 | Negative type lithographic printing plate | — | 1997-06-10 |
| 5591334 | Apparatus for generating negative ions | Bang Woo LEE | 1997-01-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637435 | Negative type lithographic printing plate | — | 1997-06-10 |
| 5591334 | Apparatus for generating negative ions | Bang Woo LEE | 1997-01-07 |