Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861200 | Apparatus for pneumatically conveying bulk material | Paul Lubbehusen, Norbert Eberhard | 1989-08-29 |
| 4859067 | Bulk material mixer | Theodor Breucker, Reinhard Ernst, Robert Storf | 1989-08-22 |