Blocker; Douglas L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Blocker; Douglas L..The latest application filed is for "dual motor upright vacuum cleaner".
- Blocker; Douglas L. - Fenton MO US
- Blocker; Douglas L. - Festus MO
- Blocker; Douglas L. - Jefferson MO
| Patent | Date |
|---|---|
| Dual motor upright vacuum cleaner Grant 8,393,052 - Blocker , et al. March 12, 2 | 2013-03-12 |
| Dual Motor Upright Vacuum Cleaner App 20110296647 - Blocker; Douglas L. ; et al. | 2011-12-08 |
| Dual motor upright vacuum cleaner Grant 8,020,252 - Blocker , et al. September 20, 2 | 2011-09-20 |
| Dual Motor Upright Vacuum Cleaner App 20100299864 - Blocker; Douglas L. ; et al. | 2010-12-02 |
| Dual motor upright vacuum cleaner Grant 7,805,807 - Blocker , et al. October 5, 2 | 2010-10-05 |
| Vacuum cleaner with sensing system Grant 7,627,927 - Blocker , et al. December 8, 2 | 2009-12-08 |
| Vacuum Cleaner with Sensing System App 20080301899 - Blocker; Douglas L. ; et al. | 2008-12-11 |
| Dual Motor Upright Vacuum Cleaner App 20080222838 - Blocker; Douglas L. ; et al. | 2008-09-18 |
| Dual motor upright vacuum cleaner Grant 7,386,915 - Blocker , et al. June 17, 2 | 2008-06-17 |
| Vacuum cleaner height adjustment Grant 7,353,563 - Blocker , et al. April 8, 2 | 2008-04-08 |
| Vacuum cleaner counter-balance mechanism Grant 7,310,855 - Blocker , et al. December 25, 2 | 2007-12-25 |
| Flow control valve system for an upright vacuum cleaner with a cleaning hose App 20060070204 - Blocker; Douglas L. ; et al. | 2006-04-06 |
| Brush roll for a vacuum cleaner Grant D518,258 - Hamm , et al. March 28, 2 | 2006-03-28 |
| Vacuum cleaner counter-balance mechanism App 20060005348 - Blocker; Douglas L. ; et al. | 2006-01-12 |
| Vacuum cleaner height adjustment App 20060005349 - Blocker; Douglas L. ; et al. | 2006-01-12 |
| Dual motor upright vacuum cleaner App 20050229356 - Blocker, Douglas L. ; et al. | 2005-10-20 |
| Light weight table structures Grant 5,483,904 - Kelly , et al. January 16, 1 | 1996-01-16 |
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