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2. Inventories (Tables)
12 Months Ended
Dec. 31, 2012
Notes to Financial Statements  
Inventories
    2012     2011  
Raw materials   $ 398,510     $ 173,510  
Work in progress     116,319       11,768  
Finished goods     141,568       320,678  
Total   $ 656,397     $ 505,956