Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4270876 | Method of lining a vertical mine shaft with concrete | Joseph M. Halter, Donald E. Rasmussen, Robert G. Sullivan, Robert B. Moffat | 1981-06-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4270876 | Method of lining a vertical mine shaft with concrete | Joseph M. Halter, Donald E. Rasmussen, Robert G. Sullivan, Robert B. Moffat | 1981-06-02 |