Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7092541 | Surround sound loudspeaker system | — | 2006-08-15 |
| D413890 | Loud speaker | — | 1999-09-14 |
| 5809150 | Surround sound loudspeaker system | — | 1998-09-15 |
| D306024 | Loudspeaker | — | 1990-02-13 |
| 4885782 | Single and double symmetric loudspeaker driver configurations | — | 1989-12-05 |
| 4769848 | Electroacoustic network | — | 1988-09-06 |
| 4691362 | Dihedral loudspeakers with variable dispersion circuits | — | 1987-09-01 |
| 4578809 | Dihedral loudspeakers with variable dispersion circuits | — | 1986-03-25 |
| D276805 | Loudspeaker cabinet | — | 1984-12-18 |
| D276806 | Loudspeaker cabinet | — | 1984-12-18 |
| 4430527 | Loudspeaker crossover delay equalization | — | 1984-02-07 |
| 4421949 | Electroacoustic network | — | 1983-12-20 |
| D265902 | Speaker cabinet | — | 1982-08-24 |
| 4315102 | Speaker cross-over networks | — | 1982-02-09 |