http://www.freshpatents.com/Railway-switches-and-signals-dtnewntc246.php USPTO Class 246 - Railway switches and signals en-us Fri, 19 Dec 2008 00:04:47 -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/Railroad-switch-indicator-dt20081211ptan20080302921.php Fri, 19 Dec 2008 00:04:47 -0800 A railroad switch indicator for visually signaling the position of a pair of railroad switchpoints independently of the mechanism for operating the switch. The indicator includes a sleeve with windows in which is reciprocated a slide with reflectors selected ones of which are visible through the windows of the sleeve...