Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6105191 | Toothbrush with inter-gingiva-sulcus scraping bristles | Tsehua A. Chen | 2000-08-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6105191 | Toothbrush with inter-gingiva-sulcus scraping bristles | Tsehua A. Chen | 2000-08-22 |