Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6409372 | Capped electric lamp | Ralph Hubert Peters, Hendrikus A. M. Van Dulmen | 2002-06-25 |
| 6210020 | Capped electric lamp | Hendrikus A. M. Van Dulmen, Ralph Hubert Peters | 2001-04-03 |
| 5952773 | Capped electric lamp | Hendrikus A. M. Van Dulmen | 1999-09-14 |