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Inventories (Tables)
3 Months Ended
Mar. 31, 2013
Inventories [Abstract]  
Inventories
                 
    March 31, 2013     December 31, 2012  

Finished products

  $ 413,047     $ 602,753  

Work-in-process

    713,528       666,830  

Raw materials

    1,488,434       1,402,033  
   

 

 

   

 

 

 

Net Inventories

  $ 2,615,009     $ 2,671,616