Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847908 | Loudspeaker having a two-part diaphragm for use as a car loudspeaker | Joris A. M. Nieuwendijk, Johannes W. T. Bax, Franciscus C. M. De Haas | 1989-07-11 |
JK
Johannes J. M. Kamphues
Overall (All Time): #3,932,625 of 4,157,543Top 95%
1
Patents All Time