Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5724644 | Method of and receiver for processing and reproducing a message | Derk J. C. Wassink, Heinz W. Wetsels | 1998-03-03 |
| 5261006 | Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube | Joris A. M. Nieuwendijk, Johannes W. T. Bax | 1993-11-09 |