Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6795171 | Device for judging symmetry, brightness, and efficiency of light return in precious stones | — | 2004-09-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6795171 | Device for judging symmetry, brightness, and efficiency of light return in precious stones | — | 2004-09-21 |