Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868463 | Method of operating a high-pressure discharge lamp | Jan Willem Frederik Dorleijn, Rudolf L. A. van der Heijden | 1989-09-19 |
JD
Jan W. Denneman
Overall (1989): #101,041 of 140,708Top 75%
1
Patents 1989