Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4416170 | Method of producing a steel caul | Donald B. Gibson | 1983-11-22 |
| 4238438 | Hardboard with smooth, dense surface and method | Donald B. Gibson | 1980-12-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4416170 | Method of producing a steel caul | Donald B. Gibson | 1983-11-22 |
| 4238438 | Hardboard with smooth, dense surface and method | Donald B. Gibson | 1980-12-09 |