Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6996243 | Loudspeaker with shaped sound field | Andrew C. Welker | 2006-02-07 |
| D484492 | Speaker | Andrew C. Welker | 2003-12-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6996243 | Loudspeaker with shaped sound field | Andrew C. Welker | 2006-02-07 |
| D484492 | Speaker | Andrew C. Welker | 2003-12-30 |