Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7643375 | Apparatus and method for seismic data acquisition | Phil Behn, Leo Dekkers, John Downey, Keith Elder, Jerry Iseli | 2010-01-05 |
| 7158445 | Apparatus and method for seismic data acquisition | Lawrence Philip Behn, Leo Dekkers, John Downey, Keith Elder, Jerry Iseli | 2007-01-02 |
| 5821703 | Data distribution in lighting systems | Michael Callahan, Robert M. Goddard | 1998-10-13 |
| 5672941 | Inductorless controlled transition light dimmers optimizing output waveforms | Michael Callahan, Robert M. Goddard | 1997-09-30 |
| 5629607 | Initializing controlled transition light dimmers | Michael Callahan, Robert M. Goddard | 1997-05-13 |
| 5455490 | Power and signal distribution in lighting systems | Michael Callahan, Robert M. Goddard | 1995-10-03 |
| 5319301 | Inductorless controlled transition and other light dimmers | Michael Callahan, Robert M. Goddard | 1994-06-07 |
| 5225765 | Inductorless controlled transition and other light dimmers | Michael Callahan, Robert M. Goddard | 1993-07-06 |
| 4975629 | Inductorless controlled transition and other light dimmers | Michael Callahan, Robert M. Goddard | 1990-12-04 |
| 4823069 | Light dimmer for distributed use employing inductorless controlled transition phase control power stage | Michael Callahan, Robert M. Goddard | 1989-04-18 |
| 4633161 | Improved inductorless phase control dimmer power stage with semiconductor controlled voltage rise time | Michael Callahan, Robert M. Goddard | 1986-12-30 |
| 4441199 | Method and apparatus for amplitude limiting a composite signal | Eric Small, Eric D. Stoll | 1984-04-03 |