Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5001688 | Apparatus for playing record carriers using playing frequency ranking | Wilhelmus M. H. Louvenberg | 1991-03-19 |
HK
Henricus F. M. Van Kempen
Overall (All Time): #3,872,474 of 4,157,543Top 95%
1
Patents All Time