Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664450 | Holder for a pick, and the combination of a pick and holder | — | 1987-05-12 |
| 4650253 | Pick and the combination of a pick and holder | Raymond J. Clemmow, John D. Thorpe | 1987-03-17 |
| 4573744 | Pick and the combination of a pick and holder | Raymond J. Clemmow, John D. Thorpe | 1986-03-04 |
| 4529250 | Mineral mining apparatus | George Joel | 1985-07-16 |
| 4488758 | Pick and the combination of a pick and holder | Raymond J. Clemmow, John D. Thorpe | 1984-12-18 |