Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5592558 | Sound reproduction device | Friedbert Stuhlfelner | 1997-01-07 |
HV
Harri Valio
Overall (1997): #144,318 of 185,788Top 80%
1
Patents 1997