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Intangible Assets
9 Months Ended
Sep. 30, 2011
Intangible Assets [Abstract] 
Intangible Assets
4. Intangible Assets
Intangible assets consisted of the following:
                                 
    December 31, 2010     September 30, 2011 (Unaudited)  
    Gross carrying     Accumulated     Gross carrying     Accumulated  
    amount     amortization     amount     amortization  
 
                               
Customer lists
  $ 60,000     $ 21,581     $ 60,000     $ 30,581  
Non-compete agreements
    24,000       14,387       24,000       20,387  
Patents
    145,200       29,985       145,703       36,406  
 
                       
 
                               
 
  $ 229,200     $ 65,953     $ 229,703     $ 87,374  
 
                       
Future amortization expense associated with these intangible assets is as follow:
         
Three months ending December 31, 2011
  $ 7,143  
Year ending December 31, 2012
    22,184  
Year ending December 31, 2013
    20,571  
Year ending December 31, 2014
    10,990  
Year ending December 31, 2015
    8,571  
Thereafter
    72,870  
 
     
 
  $ 142,329