Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664307 | Spirally welded tank cars | Edward R. Gray, Edward L. Davis, Edward J. Rollo, Jr., Paul D. Long | 1987-05-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664307 | Spirally welded tank cars | Edward R. Gray, Edward L. Davis, Edward J. Rollo, Jr., Paul D. Long | 1987-05-12 |