Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6777875 | Electric lamp | Maarten Walter Steinman | 2004-08-17 |
| 5557169 | Electric lamp with high and low melting point current supply conductor | Franciscus H. Van Lierop | 1996-09-17 |