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Inventories (Tables)
6 Months Ended
Jun. 30, 2012
Inventories [Abstract]  
Inventories
                 
    June 30, 2012     December 31, 2011  

Finished products

  $ 294,827     $ 321,378  

Work-in-process

    669,995       862,000  

Raw materials

    1,599,036       1,662,185  
   

 

 

   

 

 

 

Net inventories

  $ 2,563,858     $ 2,845,563