Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873616 | Power supply for arc lamps | William Fredrick, Peter Baldwin | 1989-10-10 |
| 4873617 | Power supply for arc lamps | William Fredrick, Peter Baldwain | 1989-10-10 |
| 4873618 | Power supply for D.C. arc lamps | William Fredrick, Peter Baldwin | 1989-10-10 |