Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7940952 | Electro-acoustic transducer | — | 2011-05-10 |
| 7940953 | Magnetic membrane suspension | Gerhard Pfaffinger | 2011-05-10 |
| 7873178 | Electro-dynamic planar loudspeaker | John F. Steere, Steven W. Hutt | 2011-01-18 |