Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4531551 | Double-walled, flexible hose | Hans-Joachim Ciszewski | 1985-07-30 |
| 4524808 | Vacuum cleaner hose | Wolfgang Fleischer, Georg Endress | 1985-06-25 |
| 4368348 | Vacuum cleaner hose with an electrical conductor | Georg Endres | 1983-01-11 |