Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5159943 | Unified dental floss and bridge threader | Norvel D. Richards | 1992-11-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5159943 | Unified dental floss and bridge threader | Norvel D. Richards | 1992-11-03 |