Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4449266 | Toothbrush with two segments of bristles | Heinrich Krahn | 1984-05-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4449266 | Toothbrush with two segments of bristles | Heinrich Krahn | 1984-05-22 |