Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5418336 | Sound output device | Hiro Negishi | 1995-05-23 |
| 5402502 | Sound output system | Allen Boothroyd, Graeme Foy | 1995-03-28 |
| D356088 | Loudspeaker | Graeme Foy, Allen Boothroyd | 1995-03-07 |
| D355914 | Loudspeaker | Graeme Foy, Allen Boothroyd | 1995-02-28 |
| D334193 | Loudspeaker | Allen Boothroyd | 1993-03-23 |