http://www.freshpatents.com/Planting-dtnewntc111.php USPTO Class 111 - Planting en-us Wed, 25 Mar 2009 10:11:58 -0800 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Crop-residue-and-soil-conditioning-agricultural-implement-dt20090319ptan20090071383.php Wed, 25 Mar 2009 10:11:58 -0800 A ground opener that is allowed to caster in one direction is associated with a pair of arms connected by a pivot connection that allows one arm to move relative to the other arm. The movable arm is forced against the stationary arm when the ground opener impacts the soil...