Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947075 | Piezoelectric insert with side electric connection clips | Bernard Maury, Jean-Claude Walter, Peter Graham | 1990-08-07 |
| 4944017 | Electroacoustic insert with added coil | Peter Graham, Bernard Maury, Jean-Claude Walter | 1990-07-24 |