Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D384354 | Wedge shaped speaker enclosure | Milton Halstead | 1997-09-30 |
| D381662 | Remote control device | Milton Halstead | 1997-07-29 |
| D375742 | Vertical amplifier enclosure | Milton Halstead | 1996-11-19 |
| D371789 | Low profile amplifier enclosure for a computer | Milton Halstead | 1996-07-16 |
| D336302 | Crossover unit for an acoustic system | David Kwang, Peter L. Lam, Vannin Gale | 1993-06-08 |
| D302695 | Component for a vehicular loudspeaker | David Kwang, Masahiko Yamada | 1989-08-08 |
| D302556 | Component for a vehicular loudspeaker | David Kwang, Masahiko Yamada | 1989-08-01 |
| D288813 | Audio equalizer/amplifier | — | 1987-03-17 |
| D282759 | Video game control unit | — | 1986-02-25 |