Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5828405 | Gemstone registration system | Hermann F. Wallner, Michael Leydon | 1998-10-27 |
| 5124935 | Gemstone identification, tracking and recovery system | Hermann F. Wallner | 1992-06-23 |