| 8335326 |
Communication method for vacuum tube replacement devices |
Brett A. Hertzberg |
2012-12-18 |
| 7482863 |
Expanded performance and functions for vacuum tube replacement devices |
Brett A. Hertzberg |
2009-01-27 |
| 7408401 |
Vacuum tube replacement device, circuit and system |
— |
2008-08-05 |
| 7286060 |
Indicators for vacuum tube replacement devices |
Brett A. Hertzberg |
2007-10-23 |
| 5889388 |
Circuitry for dynamically controlling capacitor charge based on battery capacity |
David Cameron, Daniel J. Powers |
1999-03-30 |
| 5773961 |
Dynamic load controller for a battery |
David Cameron, Daniel J. Powers |
1998-06-30 |
| 4619265 |
Interactive portable defibrillator including ECG detection circuit |
Carlton B. Morgan, Daniel Yerkovich, Thomas D. Lyster, Eric C. Hagen |
1986-10-28 |
| 4610254 |
Interactive portable defibrillator |
Carlton B. Morgan, Daniel Yerkovich, Thomas D. Lyster, Eric C. Hagen |
1986-09-09 |