gdp's Comments en-us https://www.intensedebate.com/users/610908 Comments by luiscontreras Red Ferret : Dean Kamen's Slingshot water purifier and Stirling generator tech - low cost water and power for the http://ww#IDComment27879992 Hi, Congratulaations for your invent. I need know more this product. Cost maintenance, how purchase. Etc. __I live in Guatemala City. Tue, 21 Jul 2009 18:57:09 +0000 http://ww#IDComment27879992