Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859905 | Unsaturated vapor high pressure sodium lamp getter mounting | John A. Scholz, Robert S. White | 1989-08-22 |
| 4855643 | Unsaturated vapor pressure type high pressure sodium lamp | — | 1989-08-08 |
| 4850499 | Method to reduce color temperature variation in metal halide arc tubes | James C. Morris, William M. Keeffe | 1989-07-25 |
| 4850500 | Dimpled arc tube having no internal end pockets and a lamp employing same | James C. Morris, William M. Keeffe | 1989-07-25 |
| 4806826 | High pressure sodium vapor discharge device | David Alan Goodman | 1989-02-21 |