Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5757133 | Magnesium vapor discharge lamp | Ronald A. Meyer, Michael P. Duffey | 1998-05-26 |
| 5690531 | Method for the manufacture of bent tube lamps | Patrick M. Lewis, Michael P. Duffey | 1997-11-25 |
| 5600205 | Bent tube lamp | Patrick M. Lewis, Michael P. Duffey | 1997-02-04 |