Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849116 | Process and a plant for separating low density material from substrate mixtures | Alfred Weinmann, Josef Steinegger, Roland Konstantiniuk, Wolfgang Leutzendorff, Hubert Hermann | 1989-07-18 |
| 4834884 | Pressure device and seal for filter belt machines | Dag Bergloff, Rudolf Schieg, Giselher Stummer | 1989-05-30 |