Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632972 | Method for treating gingival and periodontal tissues | David Robert Williams, Stephen Roy Barrow | 1997-05-27 |
| 5616313 | Method for treating gingival and periodontal tissues | David Robert Williams, Stephen Roy Barrow | 1997-04-01 |