Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850868 | Spray shield | Gerard Wright, George E. Warrin | 1989-07-25 |
| 4820152 | Single multi-function handpiece for dental instruments | George E. Warrin, Rene J. Perdreaux, Teodor E. Constantinescu, Robert W. McGill | 1989-04-11 |