Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5179931 | Working gemstones | Peter Cooke | 1993-01-19 |
| 4517770 | Gemstone polishing machine | — | 1985-05-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5179931 | Working gemstones | Peter Cooke | 1993-01-19 |
| 4517770 | Gemstone polishing machine | — | 1985-05-21 |