Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4650253 | Pick and the combination of a pick and holder | Leonard Radford, John D. Thorpe | 1987-03-17 |
| 4573744 | Pick and the combination of a pick and holder | Leonard Radford, John D. Thorpe | 1986-03-04 |
| 4488758 | Pick and the combination of a pick and holder | Leonard Radford, John D. Thorpe | 1984-12-18 |
| 4453775 | Cutting tool and method of manufacturing such a tool | — | 1984-06-12 |
| 4332502 | Apparatus for use in drilling | Philip J. Wormald | 1982-06-01 |