Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6707917 | Monaural and stereo audio signal control system | Henry S. Landgraf, Dipakkumar R. Patel | 2004-03-16 |
| 5914869 | Ac/dc transformerless voltage converter | — | 1999-06-22 |
| 4599641 | Brightness control apparatus for a video signal processing system | — | 1986-07-08 |
| 4599673 | Degaussing system arrangements | Walter Truskalo | 1986-07-08 |
| 4376952 | Noise responsive automatic peaking control apparatus | — | 1983-03-15 |