Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4395161 | Transition plate for a mine roof truss | C. Frederick Eben, Charles L. Meyer, Charles W. Schaeffer | 1983-07-26 |
| 4192551 | Remote control system for mining machines | James Collen Weimer, William S. Locks, Francis G. Miller | 1980-03-11 |