FreshPatents.com: Amusement devices - USPTO Class 472 Patent Applications Update http://www.freshpatents.com/Amusement-devices-dtnewntc472.php USPTO Class 472 - Amusement devices en-us Mon, 30 Jan 2012 13:32:48 -0800 1000 Wednesday Thursday Friday Saturday Sunday FreshPatents.com 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif Pvc shell skatepark http://www.freshpatents.com/-dt20120126ptan20120021844.php Mon, 30 Jan 2012 13:32:48 -0800 A skate park has a hard top shell formed with skate features drawn down from a top surface of the hardtop shell. The hard top shell has a thickness between 0.2 mm and 1 mm. The hard top shell has a hard top shell inside surface. The hard top shell...