Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671665 | Calender for the treatment of a paper web and process for its operation | Franz Kayser, Rolf van Haag, Reinhard Wenzel, Dieter Junk | 1997-09-30 |
| 5669295 | Calender for treating both sides of a paper web | Franz Kayser, Rolf van Haag | 1997-09-23 |
| 5651863 | Apparatus and method for treating a sheet of material | Rolf van Haag | 1997-07-29 |