Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868463 | Method of operating a high-pressure discharge lamp | Jan Willem Frederik Dorleijn, Jan W. Denneman | 1989-09-19 |
| 4527097 | High-pressure sodium discharge lamp | Jan Willem Frederik Dorleijn | 1985-07-02 |