Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9494479 | Drive shaft balancing machine having two pedestals and first and second vibration sensors and balancing method | Martin Rogalla, Dieter Thelen | 2016-11-15 |
| 6035211 | Dual use speaker for both voice communication and signalling | Trampas Stern | 2000-03-07 |
| 5995260 | Sound transducer and method having light detector for detecting displacement of transducer diaphragm | — | 1999-11-30 |
| 5963640 | Radiotelephone having an acoustical wave guide coupled to a speaker | — | 1999-10-05 |
| 5890072 | Radiotelephone having a non-resonant wave guide acoustically coupled to a microphone | — | 1999-03-30 |
| 5832079 | Acoustic horn for use in cellular flip phones | — | 1998-11-03 |