Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5633940 | Audio amplifier arrangement | — | 1997-05-27 |
DW
Derk J. C. Wassink
Overall (1997): #159,608 of 185,788Top 90%
1
Patents 1997