Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824150 | Fire responsive safety door assembly | Mansam Choi | 1989-04-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824150 | Fire responsive safety door assembly | Mansam Choi | 1989-04-25 |