Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6782585 | Upright vacuum cleaner with cyclonic air flow | Helmut Gerhard Conrad | 2004-08-31 |
| 6772961 | Methods and apparatus for spray forming, atomization and heat transfer | Robin M. Forbes Jones, Richard L. Kennedy, Helmut Gerhard Conrad, Ted Szylowiec, Richard Stanley Phillips +1 more | 2004-08-10 |
| 6740144 | Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein | Helmut Gerhard Conrad | 2004-05-25 |
| 6736873 | Air flow passage for a vacuum cleaner | Helmut Gerhard Conrad, Ted Szylowiec | 2004-05-18 |