Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880211 | Method and apparatus for relining a refractory lined vessel | James D. Head, Edward F. Burns, William A. Schleizer, Dennis L. Gentry | 1989-11-14 |
| 4875662 | Method and apparatus for relining blast furnace | James D. Head, Edward F. Burns, William A. Schleizer, Dennis L. Gentry | 1989-10-24 |