Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827988 | Foaming apparatus for driving out residual air from containers filled with a foamable liquid | Gerhard Pfeiffer, Paul Knodel, Willi Scheid, Ludwig Clüsserath | 1989-05-09 |