5 windside.com 4 2009-11-13T06:24:10Z false Windside produces vertical wind turbines of varying sizes which have zero sound emissions and are capable to operate in extreme conditions. 490 1995-01-01 false 412 Viitasaari Windside windside 2009-11-13T06:26:17Z 3 http://www.windside.com/