Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4580014 | Means for controlling ribbon edge clearance in a ribbon loudspeaker | — | 1986-04-01 |
| D276519 | Loudspeaker housing | Gilbert L. Hobrough, Colin Lowndes | 1984-11-27 |
| D263470 | Loudspeaker housing | Gilbert L. Hobrough | 1982-03-23 |
| D263471 | Loudspeaker housing | Gilbert L. Hobrough | 1982-03-23 |