Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846417 | Method of and apparatus for the feeding of a paper web to a roll-making machine | Georg Muller, Peter Hoffmann | 1989-07-11 |
| 4824039 | Apparatus for applying a paper web to the underside of a roll-making drum | Georg Muller, Peter Hoffmann | 1989-04-25 |
| 4817883 | Measuring device for the pressing zone width of a roller on a roll of material and process and controller for making the roll with a predetermined roll hardness | Peter Hoffmann, Hans Leichter, Ewald G. Welp | 1989-04-04 |