Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4556350 | Mine roof anchor bolt | Frederick William Bernhardt | 1985-12-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4556350 | Mine roof anchor bolt | Frederick William Bernhardt | 1985-12-03 |