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Note 4 - Other Assets
12 Months Ended
Dec. 31, 2015
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, 2015 and 2014:
 
   
2015
   
2014
 
Technology licenses
  $ 248,855     $ 248,855  
Accumulated amortization – technology licenses
   
(248,855
)     (248,855 )
Deposits     11,010       11,010  
Total other assets
  $ 11,010     $ 11,010  
 
Amortization expense related to technology licenses was $-0-, $10,000, and $10,000 during the years ended December 31, 2015, 2014 and 2013, respectively.