Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851733 | Electric lamp having a metal foil with a convexly and concavely curved surface | Gijsbert Kuus | 1989-07-25 |
GH
Godefridus H. C. Heijnen
Overall (1989): #110,229 of 140,708Top 80%
1
Patents 1989