Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6604892 | Collection container for bulk material with a conveying pump or a suction tube | — | 2003-08-12 |
| 5932094 | Collection container with transport pump | Wolfgang Riegert, Klaus Riegert | 1999-08-03 |