Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697282 | Apparatus for and method of forming large diameter duct with liner and the product formed thereby | Robert R. Coleman, Kent R. Matthews | 1997-12-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697282 | Apparatus for and method of forming large diameter duct with liner and the product formed thereby | Robert R. Coleman, Kent R. Matthews | 1997-12-16 |