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Note 4 - Other Assets
12 Months Ended
Dec. 31, 2014
Notes to Financial Statements  
Other Assets Disclosure [Text Block]
4.
Other Assets
 
Other assets as shown on the accompanying Consolidated Balance Sheets include the following as of December 31, 2014 and 2013:
 
   
2014
   
2013
 
Technology licenses
  $ 248,855     $ 248,855  
Deposits
    11,010       11,010  
Accumulated amortization – technology licenses
    (248,855 )     (238,855 )
Total other assets
  $ 11,010     $ 21,010  
 
Amortization expense related to technology licenses was $10,000, $10,000, and $19,923 during the years ended December 31, 2014, 2013 and 2012, respectively.