http://www.freshpatents.com/Earth-working-dtnewntc172.php USPTO Class 172 - Earth working en-us Mon, 30 Jan 2012 13:28:57 -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/-dt20120126ptan20120018180.php Mon, 30 Jan 2012 13:28:57 -0800 A soil aeration device may include a plurality of arcuate blades mounted to an assembly adapted to rotate and translate the blades proximate a ground surface, thereby forming aeration pockets in the soil. In certain embodiments, the arcuate tines penetrate and fracture the soil while minimizing the amount of soil...