Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865907 | Rigid fire block sheet and method | Malinda S. Mercado | 1989-09-12 |
| 4822659 | Fire block sheet and wrapper | James S. Anderson, Kenneth Hoffman, Malinda S. Mercado | 1989-04-18 |