Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6431796 | Mine backfill | Douglas E. Goldsack, Allan G. Douglas, Wayne N. Lidkea | 2002-08-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6431796 | Mine backfill | Douglas E. Goldsack, Allan G. Douglas, Wayne N. Lidkea | 2002-08-13 |