Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814246 | Light-sensitive photoconductive recording material with light sensitive covering layer for use in manufacturing printing form or printed circuit | Manfred Michel | 1989-03-21 |
| 4798231 | Method and device for connecting at least two rods | Heinrich Glaus, Hans Joehr, Rene Freiburghaus | 1989-01-17 |