Duke; David R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Duke; David R..The latest application filed is for "method and apparatus for calibrating seeders".
- Duke; David R. - Langbank N/A CA
| Patent | Date |
|---|---|
| Metering assembly for an air seeder Grant 8,757,073 - Beaujot , et al. June 24, 2 | 2014-06-24 |
| Method and apparatus for calibrating seeders Grant 8,538,716 - Beaujot , et al. September 17, 2 | 2013-09-17 |
| Sectional meter shut-off and agricultural implement having sectional meter shut-off Grant 8,371,238 - Dean , et al. February 12, 2 | 2013-02-12 |
| Guidance system for an agricultural implement Grant 8,271,164 - Melanson , et al. September 18, 2 | 2012-09-18 |
| Method And Apparatus For Calibrating Seeders App 20120209425 - BEAUJOT; PATRICK M. ; et al. | 2012-08-16 |
| Ground Opener Assembly With Guiding Track For Depth Control App 20120132116 - Beaujot; Patrick M. ; et al. | 2012-05-31 |
| Method and apparatus for calibrating seeders Grant 8,170,825 - Beaujot , et al. May 1, 2 | 2012-05-01 |
| Metering Assembly For An Air Seeder App 20110179984 - BEAUJOT; PATRICK M. ; et al. | 2011-07-28 |
| Sectional meter shut-off and agricultural implement having sectional meter shut-off Grant 7,690,440 - Dean , et al. April 6, 2 | 2010-04-06 |
| Apparatus for controlling the placement of seeds within a furrow Grant 7,685,951 - Beaujot , et al. March 30, 2 | 2010-03-30 |
| Method And Apparatus For Calibrating Seeders App 20090271136 - Beaujot; Patrick M. ; et al. | 2009-10-29 |
| Guidance System For An Agricultural Implement App 20090101371 - MELANSON; BARRY K. ; et al. | 2009-04-23 |
| Sectional Meter Shut-off And Agricultural Implement Having Sectional Meter Shut-off App 20090079624 - Dean; Brian F. ; et al. | 2009-03-26 |
| Apparatus for controlling the placement of seeds within a furrow App 20080083358 - Beaujot; Patrick M. ; et al. | 2008-04-10 |
| Dual material placing apparatus with depth adjusting pivot point Grant 6,955,131 - Beaujot , et al. October 18, 2 | 2005-10-18 |
| Dual material placing apparatus with depth adjusting pivot point App 20040211346 - Beaujot, Patrick M. ; et al. | 2004-10-28 |
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