| D597614 |
Squat bench |
— |
2009-08-04 |
| 5821703 |
Data distribution in lighting systems |
Michael Callahan, John K. Chester |
1998-10-13 |
| 5672941 |
Inductorless controlled transition light dimmers optimizing output waveforms |
Michael Callahan, John K. Chester |
1997-09-30 |
| 5629607 |
Initializing controlled transition light dimmers |
Michael Callahan, John K. Chester |
1997-05-13 |
| 5455490 |
Power and signal distribution in lighting systems |
Michael Callahan, John K. Chester |
1995-10-03 |
| 5319301 |
Inductorless controlled transition and other light dimmers |
Michael Callahan, John K. Chester |
1994-06-07 |
| 5225765 |
Inductorless controlled transition and other light dimmers |
Michael Callahan, John K. Chester |
1993-07-06 |
| 4975629 |
Inductorless controlled transition and other light dimmers |
Michael Callahan, John K. Chester |
1990-12-04 |
| 4823069 |
Light dimmer for distributed use employing inductorless controlled transition phase control power stage |
Michael Callahan, John K. Chester |
1989-04-18 |
| 4633161 |
Improved inductorless phase control dimmer power stage with semiconductor controlled voltage rise time |
Michael Callahan, John K. Chester |
1986-12-30 |
| 4550276 |
Buss structures for multiscene manual lighting consoles |
Michael Callahan |
1985-10-29 |
| 4511824 |
Parallel access memory lighting system |
— |
1985-04-16 |