Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864181 | Electric incandescent lamp having truncated conical filament and a mirror coating | Johannes W. Ingeveld | 1989-09-05 |
AH
Antonius J. Huijbers
Overall (1989): #137,349 of 140,708Top 100%
1
Patents 1989