Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5619090 | Low-pressure sodium discharge lamp | — | 1997-04-08 |
| 5498927 | Low-pressure sodium discharge lamp having sealed current conductors with first and second glass coating | Petrus M. G. Van Gennip | 1996-03-12 |
| 4808877 | Low-pressure sodium discharge lamp having a collar-like heat shield | Adriaan Netten | 1989-02-28 |
| 4349764 | Low-pressure metal vapor discharge lamp | Peter K. R. M. Steeman | 1982-09-14 |