Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7871420 | Resonant converter tuning for maintaining substantial constant phaco handpiece power under increased load | David L. Anderson, Nate G. Elsen, Michael W. Fellinger | 2011-01-18 |
| 6997935 | Resonant converter tuning for maintaining substantially constant phaco handpiece power under increased load | David L. Anderson, Nate G. Elsen, Michael W. Fellinger | 2006-02-14 |
| 5843109 | Ultrasonic handpiece with multiple piezoelectric elements and heat dissipator | George Bromfield | 1998-12-01 |