Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875771 | Method for assessing diamond quality | Heather J. Bowley | 1989-10-24 |
| 4799786 | Method of diamond identification | — | 1989-01-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875771 | Method for assessing diamond quality | Heather J. Bowley | 1989-10-24 |
| 4799786 | Method of diamond identification | — | 1989-01-24 |