Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4281547 | Electronic mine roof bolt tester | Charles F. Cole, Jr. | 1981-08-04 |
| 4279078 | Fluid presence detector | Charles F. Cole, Jr. | 1981-07-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4281547 | Electronic mine roof bolt tester | Charles F. Cole, Jr. | 1981-08-04 |
| 4279078 | Fluid presence detector | Charles F. Cole, Jr. | 1981-07-21 |