Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811391 | Telephone set comprising a line voltage stabilizer having a DC supply point | Frederik Van Dongen | 1989-03-07 |
PS
Peter J. M. Sijbers
Overall (1989): #69,267 of 140,708Top 50%
1
Patents 1989