Issued Patents All Time
Showing 576–600 of 708 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8166607 | Upright vacuum cleaner | — | 2012-05-01 |
| 8151407 | Surface cleaning apparatus with enlarged dirt collection chamber | — | 2012-04-10 |
| 8146201 | Surface cleaning apparatus | — | 2012-04-03 |
| 8127398 | Convertible surface cleaning apparatus | — | 2012-03-06 |
| 8123254 | Method for mounting artwork reproductions printed on a deformable substrate and for incorporating a printed deformable substrate in a publication | Helmut Horst G. Conrad, Ron Hills, Nina Conrad | 2012-02-28 |
| 8048183 | Vacuum cleaner with a divider | — | 2011-11-01 |
| 8034140 | Configuration of a cyclone assembly and surface cleaning apparatus having same | — | 2011-10-11 |
| 8021526 | Household appliances which utilize an electrolyzer and electrolyzer that may be used therein | — | 2011-09-20 |
| 8015659 | Air flow passage for a vacuum cleaner | Helmut Gerhard Conrad, Ted Szylowiec | 2011-09-13 |
| 7941895 | Configuration of a cyclone assembly and surface cleaning apparatus having same | — | 2011-05-17 |
| 7931717 | Vacuum cleaner with a removable cyclone array | — | 2011-04-26 |
| 7887612 | Vacuum cleaner with a plurality of cyclonic cleaning stages | — | 2011-02-15 |
| 7867308 | Cyclonic array such as for a vacuum cleaner | — | 2011-01-11 |
| 7811345 | Vacuum cleaner with a removable cyclone array | — | 2010-10-12 |
| 7811528 | Process and apparatus for chemical conversion | Richard Stanley Phillips, Andrew Richard Henry Phillips, Helmut Gerhard Conrad | 2010-10-12 |
| 7803207 | Vacuum cleaner with a divider | — | 2010-09-28 |
| 7776120 | Vacuum cleaner with a moveable divider plate | — | 2010-08-17 |
| 7749293 | Vacuum cleaner with a removable cyclone array | — | 2010-07-06 |
| 7740675 | Cyclonic vacuum cleaner | — | 2010-06-22 |
| 7722709 | Vacuum cleaner with an illuminated interior | — | 2010-05-25 |
| D611210 | Vacuum cleaner | Nina Conrad | 2010-03-02 |
| D608064 | Vacuum cleaner | Nina Conrad | 2010-01-12 |
| 7619183 | Method and apparatus for cooking using a combustible gas produced with an electrolyzer | — | 2009-11-17 |
| 7588616 | Vacuum cleaner with a plate and an openable dirt collection chamber | Dave Peterson | 2009-09-15 |
| D585608 | Vacuum cleaner | Nina Conrad | 2009-01-27 |