Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6259798 | Passive radiator cooled electronics/heat sink housing for a powered speaker | Terry L. Wetherbee, David D. Bie | 2001-07-10 |
| 6176345 | Pistonic motion, large excursion passive radiator | Terry L. Wetherbee, David D. Bie | 2001-01-23 |
| D387351 | Speaker | Greg C. Mackie, Mats R. Jarlstrom | 1997-12-09 |