Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7834987 | Systems and methods for evaluating the appearance of a gemstone | Mary Johnson, James Shigley, Thomas Scott Hemphill | 2010-11-16 |
| 7260544 | System and methods for evaluating the appearance of a gemstone | Mary Johnson, James Shigley, Thomas Scott Hemphill | 2007-08-21 |