Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888528 | Method of and apparatus for ultrahigh frequency starting of high intensity discharge lamps | Scott J. Butler, Robert J. Regan, Joseph M. Proud | 1989-12-19 |
| 4866339 | Beam mode fluorescent lamp | A. Bowman Budinger, Joseph M. Proud | 1989-09-12 |