Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871961 | Method of controlling the supply of power to electrical loads with a minimum of switching surges | Karl J. Kuhlmorgen, Egbert Kuhl | 1989-10-03 |
| 4866327 | Gas discharge lamp with microporous aerogel | Hanns E. Fischer, Horst Horster, Joseph G. Van Lierop | 1989-09-12 |
| 4829159 | Method of optimizing control of plural switched electric loads to reduce switching transients | Walter Braun, Egbert Kuhl | 1989-05-09 |