Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013968 | Reprographic metal halide lamps having long life and maintenance | Timothy D. Russell, Paul G. Hlahol, Charles N. Stewart | 1991-05-07 |
| 4918352 | Metal halide lamps with oxidized frame parts | Frank I. Ewing, Ralph M. Potter, Timothy D. Russell, Edward G. Zubler | 1990-04-17 |