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Note 3 - Patents (Detail) - Estimated future amortization expense (USD $)
Dec. 31, 2012
Dec. 31, 2011
2013 $ 15,592  
2014 15,592  
2015 14,627  
2016 11,733  
2017 11,733  
thereafter 24,823  
Total expense $ 94,100 $ 105,556