Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973248 | Delivery system for dentinal/enamel adhesive materials | — | 1990-11-27 |
| 4793809 | Fiber filled dental porcelain | Mark Sigler, Delbert E. Day | 1988-12-27 |
| 4654007 | Porcelain dental restoration method | Roger M. Sigler | 1987-03-31 |