Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6751823 | Motorized toothbrush brush tip with two counter-rotating brush heads rotating on a common axis | Howard Cohen | 2004-06-22 |
| 6719796 | Spinal surgical prosthesis | Howard Cohen, Matthew Cohen | 2004-04-13 |