Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808877 | Low-pressure sodium discharge lamp having a collar-like heat shield | Adriaan Netten | 1989-02-28 |
KV
Karel R. Vervecken
Overall (1989): #89,458 of 140,708Top 65%
1
Patents 1989