Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8331931 | System and method for cordless handset registration | Holger Janssen | 2012-12-11 |
| 4492825 | Electroacoustic transducer | Alex M. Brzezinski, Harold J. Hershey | 1985-01-08 |