Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867060 | Drive system for sheet-fed rotary printing machine | Victor Hefftler, Hans Johne, Arndt Jentzsch, Helmut Schone | 1989-09-19 |
| 4811663 | Driving system for sheet-fed rotary printing machine | Victor Hefftler, Hans Johne, Arndt Jentzsch, Helmut Schone | 1989-03-14 |