Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149267 | Dental shade guide assembly | Ross A. Longhini, Gerald E. Drake, James R. Kvitrud | 1992-09-22 |
| D328348 | Dental shade guide | Ross A. Longhini, Gerald E. Drake, James R. Kvitrud | 1992-07-28 |
| 5078598 | Dental shade guide | — | 1992-01-07 |