Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4210223 | Low frequency folded exponential horn loudspeaker apparatus with bifurcated sound path | Paul W. Klipsch | 1980-07-01 |
| D254491 | High frequency loudspeaker | — | 1980-03-18 |
| D253819 | Low frequency loudspeaker | — | 1980-01-01 |