Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7987544 | Brushhead attachment system for a power toothbrush | Friedrich Stoeffler, Craig Black, Daniel Joseph Greene | 2011-08-02 |
| 7979938 | Changing amplitude of movement by changing the drive frequency of a toothbrush brushhead | Scott E. Hall, John W. Pace, William E. Bryant, Joseph W. Grez | 2011-07-19 |