Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4271407 | Tunnel roof monitor employing an induction coil extensometer | Arnold J. Farstad, Michael G. Gibbons, David L. Swigert | 1981-06-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4271407 | Tunnel roof monitor employing an induction coil extensometer | Arnold J. Farstad, Michael G. Gibbons, David L. Swigert | 1981-06-02 |