Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5183595 | Device for gassing liquids | — | 1993-02-02 |
| 4841689 | Two-shell telescopic element | — | 1989-06-27 |
| 4833840 | Telescoping wall element of a movable partition | Rolf Kalischewski, Gerd Petersen | 1989-05-30 |
| 4734191 | Apparatus for the intermittent aeration of liquids | — | 1988-03-29 |
| 4631134 | Process for the intermittent aeration of liquids and aeration device for use in such process | — | 1986-12-23 |
| 4478451 | Mechanically operated tongs for gripping round objects | Eberhard Brucher | 1984-10-23 |