freepatentsonline.com 141 131 http://www.freepatentsonline.com/ http://www.freepatentsonline.com/images/logo.gif Free Patents Online: Combustion http://www.freepatentsonline.com/rssfeed/rssapp431.xml USPTO Class 431 Combustion en-us Thu, 09 Feb 2012 08:00:00 EST <![CDATA[SENSOR CONTROLLER]]> http://www.freepatentsonline.com/y2012/0034569.html Thu, 09 Feb 2012 08:00:00 EST <![CDATA[COMBUSTION AIR CONTROL]]> http://www.freepatentsonline.com/y2012/0034568.html Thu, 09 Feb 2012 08:00:00 EST <![CDATA[AUTOMATIC GAS TORCH IGNITION IN AN OXYGEN RICH ENVIRONMENT]]> http://www.freepatentsonline.com/y2012/0034567.html Thu, 09 Feb 2012 08:00:00 EST <![CDATA[BURNER]]> http://www.freepatentsonline.com/y2012/0034540.html Thu, 09 Feb 2012 08:00:00 EST