Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8213643 | Sound transducer for the transmission of audio signals | — | 2012-07-03 |
| D563384 | Fitting for speaking and listening with neck piece | — | 2008-03-04 |
| D512709 | Headset with modular fittings for speaking and listening | — | 2005-12-13 |
| D478902 | Plug socket for a radio telephone handset | — | 2003-08-26 |