Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6178251 | Collar microphone | Bruce Lancaster, Brendon Stead | 2001-01-23 |
| D436589 | Microphone for flat surfaces | Bruce Lancaster, Raymond Weikel | 2001-01-23 |
| D428406 | Microphone for flat surfaces | Bruce Lancaster, Raymond Weikel, Jan Hippen, Iidefonso Resuello, Dieter Reuther +1 more | 2000-07-18 |
| D410921 | Headset microphone | Bruce Lancaster, Brendon Stead | 1999-06-15 |