Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793427 | Disc cutters for rock working machines | Roger S. Lambson, Vaughan Griffiths | 1988-12-27 |
| 4491457 | Drilling bit | — | 1985-01-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793427 | Disc cutters for rock working machines | Roger S. Lambson, Vaughan Griffiths | 1988-12-27 |
| 4491457 | Drilling bit | — | 1985-01-01 |