Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887309 | Optical repeater for fault tracing in an optical transmission system | Ove Andersson, Johan Berg, Armand Vatsel | 1989-12-12 |
PG
Per Granestrand
Overall (1989): #69,887 of 140,708Top 50%
1
Patents 1989