Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6409510 | Method for learning a foreign language | — | 2002-06-25 |
| 5398139 | Digital audio reproduction system with improved noise suppression | Bjoan Bjerede | 1995-03-14 |
| 4947437 | Stereo microphone | — | 1990-08-07 |
| 4792938 | Low-noise bearing for phonograph turntables and the like | — | 1988-12-20 |
| 4570253 | Tone arm | — | 1986-02-11 |