Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4538765 | Method for defiberizing waste paper in a thick stock range | Hermann Mayr, Albrecht Kahmann, Wolfgang Heinbockel, Wolfgang Siewert, Josef Maier | 1985-09-03 |
| 4397713 | Method of processing waste paper and installation for the performance of the method | — | 1983-08-09 |
| 4283275 | Apparatus for processing waste paper | Wolfgang Heinbockel, Wolfgang Siewert, Albrecht Kahmann | 1981-08-11 |