Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868718 | Forward illumination lighting system for vehicles | William W. Finch, Richard L. Hansler | 1989-09-19 |
| 4868458 | Xenon lamp particularly suited for automotive applications | Richard L. Hansler | 1989-09-19 |
| 4857810 | Current interruption operating circuit for a gaseous discharge lamp | Kenneth A. Roll, Pieter J. von Herrmann | 1989-08-15 |
| 4851969 | Optical control system particularly suited for infrequently activated devices | Richard L. Hansler | 1989-07-25 |
| 4839559 | Radiant energy incandescent lamp | Frederic F. Ahlgren, Rolf S. Bergman, Richard L. Hansler, Robert G. Hantman, Leonard E. Hoegler | 1989-06-13 |
| 4810932 | Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such | Frederic F. Ahlgren, Richard L. Hansler, John J. Karikas | 1989-03-07 |
| 4811172 | Lighting systems employing optical fibers | Richard L. Hansler | 1989-03-07 |