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, Gerhard Lambrecht, Wolfgang Siewert, Josef Maier | 1985-09-03 |
| 4431482 | Dispersion apparatus for the preparation of waste paper | Harald Selder, Erich Linck | 1984-02-14 |
| 4283275 | Apparatus for processing waste paper | Wolfgang Siewert, Albrecht Kahmann, Gerhard Lambrecht | 1981-08-11 |