Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6151752 | Vacuum cleaner head | Edgar Melzner | 2000-11-28 |
| 5701633 | Vacuum cleaning device with a suction nozzle | — | 1997-12-30 |
| 5558210 | Microswitch | — | 1996-09-24 |
| 5035154 | Adjustment mechanism for a friction drive unit | — | 1991-07-30 |