Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832150 | Sound-permeable cover for a loudspeaker | Gunter Just | 1989-05-23 |
| 4817163 | Loud-speaker combined with a device for producing lighting effects | — | 1989-03-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832150 | Sound-permeable cover for a loudspeaker | Gunter Just | 1989-05-23 |
| 4817163 | Loud-speaker combined with a device for producing lighting effects | — | 1989-03-28 |