Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866236 | Flexible extendable backing shield for welding reactive metals | William E. Lukens, Luther A. Marsh | 1989-09-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866236 | Flexible extendable backing shield for welding reactive metals | William E. Lukens, Luther A. Marsh | 1989-09-12 |