Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871942 | Low-pressure discharge lamp | Adrianus L. J. Burgmans | 1989-10-03 |
PI
Petrus R. Van Ijzendoorn
Overall (1989): #69,148 of 140,708Top 50%
1
Patents 1989