Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853651 | Delay circuit with all-pass network | Johannes O. Voorman, Pieter Jacob Snijder | 1989-08-01 |
JV
Johannes S. Vromans
Overall (1989): #92,315 of 140,708Top 70%
1
Patents 1989