Issued Patents All Time
Showing 76–79 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D329946 | Set of bristles for a toothbrush | John P. Curtis, Kedar N. Rustogi, John C. Crawford, James H. Kemp, Thomas Mintel +2 more | 1992-10-06 |
| 5139474 | Medical treatment device with self-centering securing members | Bert D. Heinzelman | 1992-08-18 |
| 5046213 | Plaque removing toothbrush | John P. Curtis, Kedar N. Rustogi, John C. Crawford, James H. Kemp, Thomas Mintel +2 more | 1991-09-10 |
| 4952215 | Valvulotome with leaflet disruption heads and fluid supply | Kenneth Ouriel, Karl D. Kirk, III | 1990-08-28 |