Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697117 | Brush head assembly for motor powered toothbrush | — | 1997-12-16 |
| D382407 | Handle for an electric toothbrush | Andrew Serbinski | 1997-08-19 |
| 5613259 | High frequency electric toothbrush | Keith E. Schleiffer, James E. Dvorsky, Thomas W. Graves, Ronald B. Gray, III, Nagabhusan Senapati +1 more | 1997-03-25 |