Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4382633 | Longwall mining system | Jonathan Edmund Ludlow, Paul J. Guay | 1983-05-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4382633 | Longwall mining system | Jonathan Edmund Ludlow, Paul J. Guay | 1983-05-10 |