Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673338 | System for verification of unique items | Robert N. Petersen, John Ashley Densberger, John J. Christensen | 1997-09-30 |
| 5521984 | System for registration, identification and verification of items utilizing unique intrinsic features | Robert N. Petersen, John Ashley Densberger, John J. Christensen | 1996-05-28 |