Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795943 | High-pressure sodium vapor discharge lamp | Lodewijk H. M. Meessen, Ralf Schafer | 1989-01-03 |
PA
Petrus H. Antonis
Overall (1989): #70,223 of 140,708Top 50%
1
Patents 1989